NSW man's disappearance prompts $1m reward

A $1 million reward will be announced for information over the suspected murder of Sydney man Raphael Joseph.

Police are expected to release details of the NSW government reward on Wednesday morning regarding the disappearance of Mr Joseph more than four years ago.

The 37-year-old was last seen getting into the back seat of a silver Holden Commodore on Dartbrook Road in Auburn about 11.20pm on March 20, 2014 and reported missing by his family two days later.