chicago police superintendent eddie johnson found asleep in car sot_00003025.jpg
chicago police superintendent eddie johnson found asleep in car sot_00003025.jpg
Now playing
01:33
Chicago Police Superintendent found asleep in his car
Biden 03062021
PHOTO: CNN
Biden 03062021
Now playing
02:28
'Help is on the way': Biden speaks after Senate passes relief plan
Sen. Lisa Murkowski (R-AK) asks a question at a hearing of the Senate Health, Education, Labor and Pensions Committee on September 23, 2020 in Washington, DC.
PHOTO: Alex Edelman/Pool/Getty Images
Sen. Lisa Murkowski (R-AK) asks a question at a hearing of the Senate Health, Education, Labor and Pensions Committee on September 23, 2020 in Washington, DC.
Now playing
01:40
Trump plans to campaign against Sen. Murkowski in 2022
01 senate stimulus bill 210306
PHOTO: Senate TV
01 senate stimulus bill 210306
Now playing
01:47
Senate passes Biden's $1.9 trillion Covid-19 relief bill
Pope Francis meets with Iraq's leading Shiite cleric, Grand Ayatollah Ali al-Sistani in Najaf, Iraq, Saturday, March 6, 2021. The closed-door meeting was expected to touch on issues plaguing Iraq's Christian minority. Al-Sistani is a deeply revered figure in Shiite-majority Iraq and and his opinions on religious matters are sought by Shiites worldwide.
PHOTO: Vatican Media/AP
Pope Francis meets with Iraq's leading Shiite cleric, Grand Ayatollah Ali al-Sistani in Najaf, Iraq, Saturday, March 6, 2021. The closed-door meeting was expected to touch on issues plaguing Iraq's Christian minority. Al-Sistani is a deeply revered figure in Shiite-majority Iraq and and his opinions on religious matters are sought by Shiites worldwide.
Now playing
01:42
Pope Francis holds historic meeting with revered Shia cleric
WASHINGTON, DC - MARCH 05: Sen. John Cornyn (R) (R-TX) talks with Sen. Joe Manchin (D-WV) while walking to the U.S. Senate chamber for a vote March 05, 2021 in Washington, DC. The Senate continues to debate the latest COVID-19 relief bill.  (Photo by Win McNamee/Getty Images)
PHOTO: Win McNamee/Getty Images
WASHINGTON, DC - MARCH 05: Sen. John Cornyn (R) (R-TX) talks with Sen. Joe Manchin (D-WV) while walking to the U.S. Senate chamber for a vote March 05, 2021 in Washington, DC. The Senate continues to debate the latest COVID-19 relief bill. (Photo by Win McNamee/Getty Images)
Now playing
02:54
Axelrod breaks down Manchin's surprising move
sinema
PHOTO: CNN
sinema
Now playing
01:50
Senator's move has many on the internet outraged
PHOTO: FBI
Now playing
02:58
Trump State Department official charged in Capitol riot
John King Magic Wall 0305
PHOTO: CNN
John King Magic Wall 0305
Now playing
02:17
President Biden sending a team to the US-Mexico border
PHOTO: CNN
Now playing
02:53
Here's how Canadian schools have stayed open
This image was taken during the first drive of NASA's Perseverance rover on Mars on March 4, 2021. The team has spent the weeks since landing checking out the rover to prepare for surface operations.
PHOTO: JPL-Caltech/NASA
This image was taken during the first drive of NASA's Perseverance rover on Mars on March 4, 2021. The team has spent the weeks since landing checking out the rover to prepare for surface operations.
Now playing
02:17
NASA releases stunning new images from Mars
Rep john garamendi 0305
PHOTO: CNN
Rep john garamendi 0305
Now playing
02:33
Rep. Garamendi: Any lawmaker involved in Capitol riots ought to be thrown out of Congress
A view of Capitol Hill during heightened security concerns over possible protests or violence tomorrow March 3, 2021, in Washington, DC. - Washington's security posture has been bolstered after threats of a possible March 4, 2021, "breach" of the US Capitol, with the House of Representatives changing its voting plans to avoid gathering members on a day of potential unrest. (Photo by Brendan Smialowski / AFP) (Photo by BRENDAN SMIALOWSKI/AFP via Getty Images)
PHOTO: Brendan Smialowski/AFP/Getty Images
A view of Capitol Hill during heightened security concerns over possible protests or violence tomorrow March 3, 2021, in Washington, DC. - Washington's security posture has been bolstered after threats of a possible March 4, 2021, "breach" of the US Capitol, with the House of Representatives changing its voting plans to avoid gathering members on a day of potential unrest. (Photo by Brendan Smialowski / AFP) (Photo by BRENDAN SMIALOWSKI/AFP via Getty Images)
Now playing
03:18
Rep. Sarbanes: Failure to pass HR 1 'would split our democracy in two'
Senior Advisor to the President Jared Kushner  attends a press conference on September 4, 2020, in the Brady Briefing Room of the White House in Washington, DC. (Photo by Brendan Smialowski / AFP) (Photo by BRENDAN SMIALOWSKI/AFP via Getty Images)
PHOTO: BRENDAN SMIALOWSKI/AFP/AFP via Getty Images
Senior Advisor to the President Jared Kushner attends a press conference on September 4, 2020, in the Brady Briefing Room of the White House in Washington, DC. (Photo by Brendan Smialowski / AFP) (Photo by BRENDAN SMIALOWSKI/AFP via Getty Images)
Now playing
02:50
Jared Kushner disappears from Trump's inner circle
PHOTO: CBS Evening News with Norah O'Donnell
Now playing
02:14
Governor Cuomo accuser Charlotte Bennett speaks out
In this Dec. 1, 2020 file photo, Chairman of the Federal Reserve Jerome Powell appears before the Senate Banking Committee on Capitol Hill in Washington.  Powell told Congress on Wednesday, Feb. 24, 2021,  that the central bank will not begin raising interest rates until the Fed believes it has reached its goals on maximum employment  and warned that many people in the hardest hit industries will likely need to find different jobs.  (AP Photo/Susan Walsh, Pool, File)
PHOTO: Susan Walsh/AP
In this Dec. 1, 2020 file photo, Chairman of the Federal Reserve Jerome Powell appears before the Senate Banking Committee on Capitol Hill in Washington. Powell told Congress on Wednesday, Feb. 24, 2021, that the central bank will not begin raising interest rates until the Fed believes it has reached its goals on maximum employment and warned that many people in the hardest hit industries will likely need to find different jobs. (AP Photo/Susan Walsh, Pool, File)
Now playing
02:18
Jerome Powell: US economy 'some time' away from full recovery
A customer wears a face mask while shopping for flowers displayed for sale from a wholesale merchant ahead of the Valentine's Day holiday at the Southern California Flower Market on February 12, 2021 in Los Angeles, California. - While some florists note an increased demand for socially distant gifts, the Covid-19 pandemic has impacted global supply chains and shut down most large events including weddings where flowers are popular. The Valentine's Day and Mother's Day holidays are historically the two busiest days of the year for floral businesses. (Photo by Patrick T. FALLON / AFP) (Photo by PATRICK T. FALLON/AFP via Getty Images)
PHOTO: Patrick T. Fallon/AFP
A customer wears a face mask while shopping for flowers displayed for sale from a wholesale merchant ahead of the Valentine's Day holiday at the Southern California Flower Market on February 12, 2021 in Los Angeles, California. - While some florists note an increased demand for socially distant gifts, the Covid-19 pandemic has impacted global supply chains and shut down most large events including weddings where flowers are popular. The Valentine's Day and Mother's Day holidays are historically the two busiest days of the year for floral businesses. (Photo by Patrick T. FALLON / AFP) (Photo by PATRICK T. FALLON/AFP via Getty Images)
Now playing
02:39
States rolling back Covid-19 safety measures as cases continue to rise
(CNN) —  

Former Chicago Police Superintendent Eddie Johnson denies he intentionally lied to Mayor Lori Lightfoot after he was found sleeping behind the wheel in an incident that led to his firing.

“I acknowledge that I made a poor decision and had a lapse of judgment on the night of October 16. That was a mistake and I know that,” Johnson said in a statement Tuesday. “However, I have no interest in fighting a battle for my reputation with those that want to question it now.”

After officers found Johnson sleeping in his car in October, the former superintendent told reporters at the time he felt ill because he missed taking a medication and decided to park his car. He also told Lightfoot he “had a couple of drinks with dinner.”

Monday, Lightfoot announced she had fired Johnson because he lied to her and to the public about his actions.

Lightfoot declined to say what specifically led her to oust Johnson but said she had reviewed materials of the ongoing investigation by the city’s Office of Inspector General into Johnson’s actions that showed that he “engaged in a series of ethical lapses.” She called it “intolerable.”

“Had I known all the facts at the time, I would have relieved him of his duties as superintendent then and there,” the mayor said in a statement.

In his first public statement since his firing, Johnson said he was leaving the police department with his “integrity intact.”

“One thing I want everyone to know is this: I did not intentionally mislead or deceive the Mayor or the people of Chicago,” he wrote.

He did not comment further about the mayor’s allegations or the incident in October.

“I never sought this job but I accepted it because I believed I could make a difference. I have never claimed to be perfect, but I have always given my all for the CPD and the people of Chicago,” he said.

Johnson thanked Lightfoot and former Los Angeles Police Department Chief Charlie Beck, who was named interim chief. He had planned to take over as interim superintendent January 1, once Johnson retired, but had to begin his duties on Monday.

CNN’s Brad Parks reported from Chicago and Nicole Chavez reported from Atlanta. CNN’s Roxanne Garcia contributed to this report.