Cabbie sought after taxi drags man 100m

NSW Police are searching for a taxi driver after a would-be passenger was allegedly dragged 100 metres along a Sydney street before being abandoned unconscious.

Detectives say a 30-year-old man hailed the cab in the CBD after 1am on Saturday but the driver declined the fare.

"The would-be passenger reportedly reached into the cab as the driver accelerated away and the man was dragged about 100m," a police spokesperson said in a statement.

The victim was knocked unconscious and passers-by looked after him until emergency services arrived at the scene.

The 30-year-old was subsequently taken to hospital where he was treated for head injuries.