A man is recovering from injuries he sustained during an encounter with ICE officers in Evanston, Illinois, on Sunday morning. In a video verified by NBC News, a Black man is seen on the ground near a curb behind a black SUV, with two agents wearing ICE-style vests standing over him. One agent has his face covered, and his vest reads “POLICE,” while the other appears to be pinning the man down. The man is heard shouting, “I’m a f------ U.S. citizen.” Evanston police reported that the man sustained injuries to his head, neck, and teeth and requested an ambulance. Police said they are investigating the incident, which was filmed by bystanders and gained attention after being posted on social media. In the video, one bystander in the background is heard saying the ICE officers used force against the man, while other bystanders shouted at the man on the ground, asking if he was OK. The ICE officers eventually got into the black SUV and drove off, leaving the man on the ground. Bystanders began trying to help the man and called Evanston police. Miguel Angel Olivares, one of the witnesses, told NBC Chicago that he saw two agents pinning down a gentleman and using very rough force on him. Olivares said the man had a swollen jaw and some blood on his shirt, unsure if it was the agent's or the man's blood. According to Evanston police, they spoke to an ICE agent who said federal immigration officers had attempted to identify an individual who resembled a person they were seeking. After the man refused to provide identification, he was detained for fingerprinting and resisted detention. An Evanston police officer reported observing blood on the agent’s hands. The agent said he was injured while attempting to handcuff the individual and declined medical treatment. Agents later determined he was not the person they were seeking and learned that he was a U.S. citizen. He was released. A Department of Homeland Security spokesperson told NBC News that their officers encountered a person who resembled someone they were targeting in an enforcement operation in Evanston on Sunday. The statement said ICE approached the individual and immediately identified themselves as law enforcement. The individual was given lawful commands but was not cooperative and refused to identify himself. ICE officers relied on their training and later left the scene without further incident once the individual finally identified himself. DHS enforcement operations are described as highly targeted, and officers do their due diligence. DHS did not comment on the man's injuries or why ICE officers did not appear to render aid. Neither the police nor DHS identified the man who was injured. Evanston police said they spoke with the injured man at a local hospital on Sunday and photographed and documented his injuries as part of an ongoing investigation into the incident.