Three Chicago-based officers were reportedly shot and wounded early Wednesday morning.

Chicago police Superintendent David Brown told reporters that the shooting happened in the city's Morgan Park neighborhood at 5:50 a.m. while the undercover officers were on their way to an assignment. They were in an unmarked car at the time of the shooting, according to ABC News.

One of the officers reportedly is a Chicago officer and the two others are federal Bureau of Alcohol, Tobacco, Firearms and Explosives agents. All three reportedly sustained injuries that were not life threatening. No arrests have been reported in connection to the incident.

Brown said the officers were “fired upon from the street" as they were entering an on-ramp for Interstate 57. The Chicago officer was reportedly hit in the back of his head, suffering what Brown said "appears to be a graze wound.” One of the other agents that was in the car was shot in the hand and the other was hit in the torso, the news outlet reported.

Department spokesman Tom Ahern said during a press briefing Wednesday that the officers had not yet been interviewed to determine if they knew the shooters. Brown also did not say whether the shooters may have known that the men were officers.

A total of 36 police officers have been shot or shot at in Chicago this year, including Wednesday's incident, ABC News reported.

“This is a very challenging time to be in law enforcement but they are rising to the challenge of doing all they can. And the work they do is extremely dangerous,” Brown said.

President Biden is scheduled to visit the Chicago suburb of Crystal Lake, Ill., on Wednesday. 

Chicago Mayor Lori Lightfoot said she plans to speak with the president about gun control and violence in the city when she meets with him, ABC News noted.