FBI Director James Comey testifies before the Senate (Select) Intelligence Committee on February 9, 2016.
Gabriella Demczuk/Getty
FBI Director James Comey testifies before the Senate (Select) Intelligence Committee on February 9, 2016.
Now playing
02:18
Sources: Comey to testify publicly about Trump
KRDO
Now playing
01:26
Six killed in shooting at Colorado birthday party
Justin Bamberg nr intv 05092021
CNN
Justin Bamberg nr intv 05092021
Now playing
04:05
Hear why this lawmaker is comparing his state to North Korea
Now playing
03:29
Renowned chef offers $50 gift card to those who get vaccinated
Kevin McCarthy 05092021
Fox News
Kevin McCarthy 05092021
Now playing
03:30
Watch McCarthy confirm support for Stefanik for GOP leadership post
LOUISVILLE, KENTUCKY - MAY 01: Medina Spirit #8, ridden by jockey John Velazquez, (R) crosses the finish line to win the 147th running of the Kentucky Derby ahead of Mandaloun #7, ridden by Florent Geroux, and Hot Rod Charlie #9 ridden by Flavien Prat , and Essential Quality #14, ridden by Luis Saez, at Churchill Downs on May 01, 2021 in Louisville, Kentucky. (Photo by Tim Nwachukwu/Getty Images)
Tim Nwachukwu/Getty Images
LOUISVILLE, KENTUCKY - MAY 01: Medina Spirit #8, ridden by jockey John Velazquez, (R) crosses the finish line to win the 147th running of the Kentucky Derby ahead of Mandaloun #7, ridden by Florent Geroux, and Hot Rod Charlie #9 ridden by Flavien Prat , and Essential Quality #14, ridden by Luis Saez, at Churchill Downs on May 01, 2021 in Louisville, Kentucky. (Photo by Tim Nwachukwu/Getty Images)
Now playing
02:50
Kentucky Derby winner's trainer speaks out after doping allegations
CNN
Now playing
02:02
WH Covid-19 response coordinator: We're turning the corner on pandemic
caitlyn jenner immigration path to citizenship bash intv sot vpx_00000000.png
caitlyn jenner immigration path to citizenship bash intv sot vpx_00000000.png
Now playing
01:20
Caitlyn Jenner: Immigrants should have a legal path to citizenship
CNN/@walidbarahmeh
Now playing
03:04
China's out-of-control rocket lands on Earth
CNN Weather
Now playing
01:53
Severe storms threaten millions this Mother's Day
CNN
Now playing
03:05
3 injured in Times Square shooting
Getty Images
Now playing
00:46
Actress Tawny Kitaen dies at 59
An injured school student is transported to a hospital after a bomb explosion near a school in west of Kabul, Afghanistan, Saturday, May 8, 2021.   A bomb exploded near a school in west Kabul on Saturday, killing several people, many them young students, an Afghan government spokesmen said. (AP Photo/Rahmat Gul)
Rahmat Gul/AP
An injured school student is transported to a hospital after a bomb explosion near a school in west of Kabul, Afghanistan, Saturday, May 8, 2021. A bomb exploded near a school in west Kabul on Saturday, killing several people, many them young students, an Afghan government spokesmen said. (AP Photo/Rahmat Gul)
Now playing
01:27
At least 30 people killed in blast near Kabul girls' school
Colonial Pipeline
Now playing
01:49
Cyberattack forces major pipeline to shut down temporarily
Now playing
02:35
US infection rate hits 7-month low as vaccinations rise
Palestinian protesters hurl rocks amid stun grenade sparks during clashes with Israeli security forces at the al-Aqsa mosque compound in Jerusalem, on May 7, 2021. (Photo by Ahmad GHARABLI / AFP) (Photo by AHMAD GHARABLI/AFP via Getty Images)
AHMAD GHARABLI/AFP via Getty Images
Palestinian protesters hurl rocks amid stun grenade sparks during clashes with Israeli security forces at the al-Aqsa mosque compound in Jerusalem, on May 7, 2021. (Photo by Ahmad GHARABLI / AFP) (Photo by AHMAD GHARABLI/AFP via Getty Images)
Now playing
02:45
Israeli police clash with Palestinians at mosque
A pedestrian walks by a now hiring sign at Ross Dress For Less store on April 02, 2021 in San Rafael, California. According to a report by the Bureau of Labor Statistics, the U.S. economy added 916,000 jobs in March and the unemployment rate dropped to 6 percent. Leisure and hospitality jobs led the way with 280,000 new jobs followed by restaurants with 176,000 jobs and construction with 110,000 new positions. (Photo by Justin Sullivan/Getty Images)
Justin Sullivan/Getty Images
A pedestrian walks by a now hiring sign at Ross Dress For Less store on April 02, 2021 in San Rafael, California. According to a report by the Bureau of Labor Statistics, the U.S. economy added 916,000 jobs in March and the unemployment rate dropped to 6 percent. Leisure and hospitality jobs led the way with 280,000 new jobs followed by restaurants with 176,000 jobs and construction with 110,000 new positions. (Photo by Justin Sullivan/Getty Images)
Now playing
02:11
US added fewer jobs for April than expected, leaving economists disappointed

Story highlights

Mueller and Comey have discussed parameters to avoid conflicts with criminal probe.

Comey is likely to confirm for the first time accounts of pressure from Trump over Russia investigations.

(CNN) —  

Fired FBI director James Comey plans to testify publicly in the Senate as early as next week to confirm bombshell accusations that President Donald Trump pressured him to end his investigation into a top Trump aide’s ties to Russia, a source close to the issue said Wednesday.

Final details are still being worked out and no official date for his testimony has been set. Comey is expected to appear before the Senate Intelligence Committee, which is investigating possible connections between the Trump campaign and Russia during last year’s presidential election.

02:32 - Source: CNN
Flynn, Cohen issued subpoenas in Russia probe

Comey has spoken privately with Special Counsel Robert Mueller III to work out the parameters for his testimony to ensure there are no legal entanglements as a result of his public account, a source said. Comey will likely sit down with Mueller, a longtime colleague at the Justice Department, for a formal interview only after his public testimony.

When he testifies, Comey is unlikely to be willing to discuss in any detail the FBI’s investigation into the charges of possible collusion between Russia and the Trump campaign – the centerpiece of the probe, this source said. But he appears eager to discuss his tense interactions with Trump before his firing, which have now spurred allegations that the president may have tried to obstruct the investigation.

If it happens, Comey’s public testimony promises to be a dramatic chapter in the months-long controversy, and it will likely bring even more intense scrutiny to an investigation that Trump has repeatedly denounced as a “witch hunt.”

The appointment of Mueller as a special counsel in the Russia investigation had raised concerns among some members of Congress that his probe could scuttle the chance for Congress and the public to hear directly from Comey. That appears less likely now that Mueller and Comey have discussed the limits of his testimony.

Since his firing last month, dramatic accounts have emerged in the New York Times, CNN, and elsewhere about the tense confrontations with Trump that Comey memorialized in memos afterward.

A week after he took office in January, Trump allegedly demanded Comey’s “loyalty” if he kept him on as FBI director, and he urged Comey to drop his ongoing investigation into Michael Flynn, Trump’s fired national security adviser, in a separate, one-on-one meeting.

The source said that Comey is expected to stand by those accounts in his testimony.

“The bottom line is he’s going to testify,” the source close to the issue said. “He’s happy to testify, and he’s happy to cooperate.”

Officials with the Justice Department and Mueller’s office declined to comment.