Edmonton police are looking for a Good Samaritan who tried to help an injured man into the lobby of a downtown building on Thursday.

Police say the man had injuries consistent with being hit by a vehicle when the do-gooder helped him into a building near 100th Street and 103rd Avenue around 4 a.m.

When EMS and officers arrived, the 54-year-old victim was conscious and breathing, but in need of medical attention.

He was taken to hospital, where he later died.

The cause of death is still being investigated.

Now, police are hoping to identify the man who tried to help, described as possibly in his 20s, standing 5'10" with an average build and short dark hair.

He was last seen wearing blue jeans, black shoes and a multi-coloured ski jacket with a yellow sleeve.