A man struck by a car “is having difficulty remembering who he is,” according to the Denver Police Department, which needs help identifying him.

Update: Denver police said the man has been reunited with his family.

The man was on foot when he was struck by a vehicle on March 16, five days ago, at West 8th Avenue and Speer Boulevard and was treated at Denver Health Medical Center.

Anyone with information is asked to call Metro Denver Crime Stoppers at 720-913-7867.

It’s not clear whether the man’s amnesia was a result of the collision, but retrograde amnesia is a known effect of concussions.

The man suffered “relatively minor” injuries in the collision, according to Kelli Christensen, a Denver Health spokeswoman, though she could not describe them further.

“He was treated for the car accident, and that’s when we realized he had amnesia. He’s doing well, other than not knowing who he is,” she said.

” … We want to get him reunited. We’re sure someone’s missing him.”

The man was struck by a hit-and-run driver at about 10 p.m. on the day of the collision, police told The Denver Post.