Five steal pizzas from Sydney driver

A 21-year-old pizza delivery driver had a "sharp weapon" held to his neck after being waylaid by five masked robbers who stole pizzas, cash and drinks in Sydney's west.

The driver was making a delivery at Girraween just before 8pm on Thursday when he was confronted by a group of five people wearing red, white and black face masks, police said.

One man held a "sharp weapon" to his neck while threatening him before the group ran off with the delivery towards Civic Park in Pendle Hill.