A young man has been rescued after being stuck in an abandoned restaurant's grease vent for two days.

Bizarre on Female First

Bizarre on Female First

Alameda County Sheriff's Office wrote in a Facebook post that the man - who was physically exhausted and suffering from dehydration - ''would not have survived another day given the circumstances.''

The officers were called to a disused Chinese restaurant in San Lorenzo, around 25 miles east of San Francisco and reported a ''faint voice calling for help,'' at around 9.30 on Wednesday, according to Sergeant Ray Kelly.

They used a ladder to reach the roof vent on top of the restaurant and found the 29-year-old stuck in a sheet metal grease duct running from the roof to the kitchen.

It took firefighters up to an hour to free the man who was trapped in the chute.

He was taken to a local hospital for treatment and is expected to make a full recovery.

A decision will be made later if he will face prosecution.