Man injured after fall from side of six-storey Melbourne building

A man is believed to have fallen while trying to climb a building in Melbourne's south-east early today.

Witnesses have told emergency services a man was trying to climb the six-storey Coles Supermarket building in Prahran when he fell early this morning.

A man, believed to be in his early 20s, was taken to the Alfred Hospital in a critical condition.

An Ambulance Victoria spokesman said he suffered head and facial injuries, as well as possible spinal injuries.