An investigation has been launched after a man was threatened at knifepoint as he walked through a park in Merstham.

The victim was confronted by two men on bicycles last Friday evening just off Bletchingley Road.

Both offenders were carrying knives.

The victim was knocked to the ground before being forced to hand over cash, his cigarettes and lighter.

He was then threatened with further harm if he informed the police.

Both suspects are described as 18-19 years old; wearing hooded tops and jeans. Their faces were partially hidden by scarves.