An older man was found just after midnight last night in an alcove on Columbus Avenue suffering from severe head trauma.

This was on the 900 block of Columbus, between Chestnut and Lombard, and the man was critically injured and the injuries are life threatening. He's believed to be in his 50s or 60s.

The SFPD is seeking tips from any possible witnesses at (415) 575-4444 or by text to TIP411.