Police seek help identifying jogger in critical condition in Melbourne hospital

A man is in a critical condition in hospital after apparently collapsing while jogging on a street in south-east Melbourne.

The man wasn't carrying any identification when he was found by a passerby on Ventnor Street in Chadstone around 6.30pm yesterday, police said.

Ambulance paramedics took the man to The Alfred hospital in a critical condition, but attempts to locate his family have been unsuccessful.

Police have appealed for public assistance to try and identify him.

He's described as being aged in his early 50s, of solid build and 188cm tall, with balding white hair and clean shaven.