Police in Urbandale, Iowa set a blockade after two police officers were shot and killed in separate attacks described as "ambush-style" in Des Moines on Nov. 2, 2016. Reuters

UPDATE: 12:32 p.m. EDT — The two Iowa police officers killed early Wednesday morning in their patrol cars were identified as Anthony "Tony" Beminio, a Des Moines seargant, and Justin Martin, an Urbandale officer, the Des Moines Register reported.

"These were our friends. They were our coworkers," NBC News reported Des Moines Police Sgt. Paul Parizek told reporters at a news conference. "We're heartbroken."

The suspect in the fatal shooting, Scott Michael Greene, remained in custody Wednesday afternoon. He has not been arrested, as charges are still pending, according to the Washington Post.

UPDATE: 10:34 a.m. EDT — Authorities in Iowa took Scott Michael Greene, 46, into custody Wednesday following the fatal shooting of two police officers in their patrol cars, WHO TV reported.

Earlier in the morning, Des Moines Police Sgt. Paul Parizek had told reporters only that detectives wanted to "speak with" Greene. But law enforcement did clearly identify him as a suspect in the killings, which were carried out "ambush-style," according to a news release.

It may not be his first run-in with police. Greene — or a person with the same name and birth date in the Iowa court system — was charged with interference with official acts and harassment after two incidents in 2014, the Des Moines Register reported exclusively. In the first case, he became aggressive during a body search for weapons. In the second, Greene threatened to kill a person he called a racial slur in a parking lot.

Original story:

Police in Des Moines released the name, picture and information of a man they say is linked to the killing of two officers early Wednesday morning in an "ambush-style" attack. The Des Moines Register identified the suspect as Scott Michael Greene, a 46-year-old with brown hair and green eyes.

"Our detectives are looking to speak with Mr. Greene right now," Des Moines Police Sgt. Paul Parizek said at a news conference Wednesday morning. "I can't go into great detail right now, but he's definitely somebody we want to talk to."

Greene, who reportedly has a history of assault, had not been caught as of 9:30 a.m. EDT Wednesday.

Greene is from Urbandale, which is a roughly 15-minute drive from Des Moines. Two officers, one from Urbandale and one from Des Moines, were found shot in their patrol cars Wednesday. Police found the first victim after responding to a call about gunshots just after 1 a.m. local time. Minutes later, another officer was killed en route to the first scene, according to the Register. The men's names have not been released to the public.

With a manhunt for Greene underway, Parizek condemned the attacks. "There’s somebody out there shooting police officers," he said, according to local news station WHO TV. "We hope we find him before anybody else gets hurt. There’s a clear and present danger to police officers right now."

Parizek told reporters officers were temporarily going out in pairs to stay safe.

After Greene was identified, BuzzFeed News surfaced an October YouTube video uploaded on an account with the name "Scott Greene" showing him confronting police at a school.

In the clip, which is labeled "Police Abuse, Civil Rights Violation at Urbandale High School 10/14/16," officers ask the person filming to leave campus after causing a disturbance. The man with the camera then claims he was assaulted in the stands while holding a flag. A second, shorter video on the account shows a photo of a man with a Confederate flag, according to BuzzFeed.

Parizek said Wednesday morning that he was aware of the recordings but had not personally seen them.

Wednesday's Des Moines shootings came four months after five police officers were killed in Dallas on July 7. That was the deadliest day for American police since the Sept. 11, 2001 terror attack in New York City, CNN reported.