PHOTO: Tessa Majors/Instagram
Now playing
01:24
14-year-old boy arrested in death of Tessa Majors
US President Joe Biden listens to the US National Anthem during the virtual Presidential Inaugural Prayer Service hosted by the Washington National Cathedral, in the State Dining Room of the White House in Washington, DC, on January 21, 2021. (Photo by MANDEL NGAN / AFP) (Photo by MANDEL NGAN/AFP via Getty Images)
US President Joe Biden listens to the US National Anthem during the virtual Presidential Inaugural Prayer Service hosted by the Washington National Cathedral, in the State Dining Room of the White House in Washington, DC, on January 21, 2021. (Photo by MANDEL NGAN / AFP) (Photo by MANDEL NGAN/AFP via Getty Images)
PHOTO: Mandel Ngan/AFP/Getty Images
Now playing
03:02
Biden unveils Covid-19 plan on first full day in office
Director of the National Institute of Allergy and Infectious Diseases Anthony Fauci looks on during the daily briefing in the Brady Briefing Room of the White House in Washington, DC on January 21, 2021. (Photo by MANDEL NGAN / AFP) (Photo by MANDEL NGAN/AFP via Getty Images)
Director of the National Institute of Allergy and Infectious Diseases Anthony Fauci looks on during the daily briefing in the Brady Briefing Room of the White House in Washington, DC on January 21, 2021. (Photo by MANDEL NGAN / AFP) (Photo by MANDEL NGAN/AFP via Getty Images)
PHOTO: MANDEL NGAN/AFP/AFP via Getty Images
Now playing
02:28
Dr. Fauci vows to be 'completely transparent' on Covid-19
Iraqi security forces keep guard the site of a suicide attack in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani
Iraqi security forces keep guard the site of a suicide attack in Baghdad, Iraq January 21, 2021. REUTERS/Thaier al-Sudani
PHOTO: Thaier al-Sudani/Reuters
Now playing
02:42
Dozens killed and hundreds injured in Baghdad suicide blasts
PHOTO: CNN
Now playing
05:46
Dr. Gupta on Covid-19: This is the worst it's ever been
Now playing
03:04
Avlon: QAnon supporters left desperate and disillusioned
Now playing
03:17
Many believed conspiracy theories about Trump and the election. Now, they're losing faith
PHOTO: Courtesy Owen Harrington
Now playing
04:22
He bonded with Biden over stutter. Then got call to speak at inauguration
US President Joe Biden swears in presidential appointees during a virtual ceremony in the Oval Office of the White House in Washington, DC, after being sworn in at the US Capitol on January 20, 2021. (Photo by JIM WATSON / AFP) (Photo by JIM WATSON/AFP via Getty Images)
US President Joe Biden swears in presidential appointees during a virtual ceremony in the Oval Office of the White House in Washington, DC, after being sworn in at the US Capitol on January 20, 2021. (Photo by JIM WATSON / AFP) (Photo by JIM WATSON/AFP via Getty Images)
PHOTO: JIM WATSON/AFP via Getty Images
Now playing
01:29
'I'll fire you on the spot': Biden tells staff to treat others with respect
President Joe Biden signs his first executive order in the Oval Office of the White House on Wednesday, Jan. 20, 2021, in Washington. (AP Photo/Evan Vucci)
President Joe Biden signs his first executive order in the Oval Office of the White House on Wednesday, Jan. 20, 2021, in Washington. (AP Photo/Evan Vucci)
PHOTO: Evan Vucci/AP
Now playing
02:56
Biden signs executive actions aimed at dismantling Trump's policies
Harris
Harris
PHOTO: Senate Tv
Now playing
02:01
A proud Harris smiles as she swears in new senators in her new role
Former US President George W Bush (L), Jym Clyburn from South Carolina and Former US President Bill Clinton (R) speak ahead of the inauguration of Joe Biden as the 46th US President, on the West Front of the US Capitol in Washington, DC on January 20, 2021. (Photo by SAUL LOEB / POOL / AFP) (Photo by SAUL LOEB/POOL/AFP via Getty Images)
Former US President George W Bush (L), Jym Clyburn from South Carolina and Former US President Bill Clinton (R) speak ahead of the inauguration of Joe Biden as the 46th US President, on the West Front of the US Capitol in Washington, DC on January 20, 2021. (Photo by SAUL LOEB / POOL / AFP) (Photo by SAUL LOEB/POOL/AFP via Getty Images)
PHOTO: SAUL LOEB/AFP/POOL/AFP via Getty Images
Now playing
01:16
Clyburn reveals what Bush said about Trump and Biden at inauguration
Now playing
00:54
Officer who lured Capitol rioters away applauded at inauguration
SAN ANSELMO, CALIFORNIA - JANUARY 08: The suspended Twitter account of U.S. President Donald Trump appears on an iPhone screen on January 08, 2021 in San Anselmo, California. Citing the risk of further incitement of violence following an attempted insurrection on Wednesday, Twitter permanently suspended President Donald Trump
SAN ANSELMO, CALIFORNIA - JANUARY 08: The suspended Twitter account of U.S. President Donald Trump appears on an iPhone screen on January 08, 2021 in San Anselmo, California. Citing the risk of further incitement of violence following an attempted insurrection on Wednesday, Twitter permanently suspended President Donald Trump's account. (Photo Illustration by Justin Sullivan/Getty Images)
PHOTO: Justin Sullivan/Getty Images North America/Getty Images
Now playing
04:29
What impact could deplatforming Donald Trump have?
PHOTO: pool
Now playing
01:33
Joe Biden sworn in as 46th president of the United States
Amanda Gorman, a 23-year-old Black woman who is the United States
Amanda Gorman, a 23-year-old Black woman who is the United States' first-ever youth poet laureate, recited a poem at the inauguration of President Joe Biden and Vice President Kamala Harris.
PHOTO: Pool
Now playing
05:32
Youth poet laureate recites her stunning poem at Biden inauguration
PHOTO: CNN
Now playing
01:07
President Donald Trump departs the White House
(CNN) —  

A New York police detective who testified in a probable cause hearing in the case of slain Barnard College student Tessa Majors is facing lawsuits that allege he falsified evidence, made false accusations and forcibly searched residences without warrants, court documents show.

New York Police Department Commissioner Dermot Shea said Detective Wilfredo Acevedo has never been found to have made a single false statement or falsely arrested anyone and touted his exemplary record of service.

The president of the union that represents active and former NYPD detectives called the lawsuits a “commonly used strategy employed by defense attorneys” to undermine investigations.

The cases were highlighted by the Legal Aid Society in an email to CNN. Hannah Kaplan, an attorney with the Legal Aid Society, represents a 13-year-old boy who has been arrested and charged in connection with the killing earlier this month.

CNN has not been able to reach Acevedo for comment.

“The calculated, personal attacks against a member of the investigative team working to solve the murder of Tessa Majors is an obvious and unethical effort to make prejudicial statements outside the courtroom to effect a jury pool,” Shea said in a statement.

“The detective singled out here has made 237 arrests including 93 felony arrests removing dangerous criminals from our streets. He has been recognized with 24 department medals. He has never been found to have made a single false statement or falsely arrested anyone by either the Department, the (Civilian Complaint Review Board), any Civil Court or District Attorney.”

In two cases, both filed in April 2018, Acevedo was accused of “forcibly search(ing) plaintiff and his residence without his consent and used unnecessary and unreasonable force against plaintiff without any legal justification or provocation,” according to one of the lawsuits.

The lawsuits accuse Acevedo of initiating criminal prosecutions with charges that Acevedo and his fellow officers knew to be false, making false accusations and withholding exculpatory evidence.

The original charges were dismissed in both cases, court documents show.

“Detective Wilfredo Acevedo’s troubled past, which includes lawsuits alleging that he planted and falsified evidence, lied in court documents, and used excessive force, coupled with three substantiated disciplinary findings from the Civilian Complaint Review Board, is of great concern,” The Legal Society said in a statement. “These allegations of a pattern of serious misconduct cast further doubt on the case against our client, and given Acevedo’s long problematic history of violating New Yorkers’ constitutional rights, he simply cannot be regarded as credible.”

Majors, 18, of Charlottesville, Virginia, was walking through Morningside Park near the Barnard campus December 11 when she was confronted by assailants and stabbed several times, police said.

After the attack, she stumbled up a flight of stairs to street level before collapsing at a security booth near campus. A school security officer called 911, and she was taken to a hospital, where she was pronounced dead.

Acevedo interviewed a 13-year-old suspect, and Shea said the questioning was conducted on camera with a guardian present. The teen faces charges of second-degree murder, first-degree robbery and criminal possession of a weapon.

Acevedo testified in a Tuesday hearing that the boy said he went to the park with two other people with the intention of robbing someone. At some point before the attack, the teen told police, one of the other two people dropped a knife on the ground and he picked it up and handed it back to them, Acevedo said.

Michael Palladino, president of the Detectives’ Endowment Association, said Acevedo “is an excellent investigator with fifteen years of service.”

“The misconduct alleged in the lawsuits (is) nothing more than allegations and don’t speak to his credibility. That’s the narrative that police critics and criminal justice reformists like to generate,” Palladino said in a statement.

Gothamist was the first news outlet to report the story of the lawsuits against Acevedo.

CNN’s Darran Simon contributed to this report.