Tucson police are asking the public for help in identifying a man critically injured in a hit-and-run on the south side last week.

On Dec. 19 at about 6:30 p.m., police officers and Tucson Fire Department paramedics responded to a report of a pedestrian struck on West Drexel Road, near South Liberty Avenue, said Sgt. Chris Widmer, a Tucson Police Department spokesman.

The man sustained life-threatening injuries and remains in critical condition at a hospital, Widmer said.

Traffic detectives need help in identifying the victim who is described as Native American. The man is about 40 years old and is 6 feet tall and weighs 230 pounds, said Widmer.

He has short black hair and brown eyes. The man's right eye is a prosthetic eye, Widmer said. The man had a groomed mustache and beard.

Detectives believe the man may be a transient because of the condition of his feet, Widmer said.

Anyone with information is asked to call 911 or 88-CRIME.