FEARS are growing for the safety of a missing man who is "unfamiliar with Paisley or Glasgow". 

Phu Cu Cao has been missing from Paisley since Friday and was last seen in Christie Street at around 3.20pm. 

READ MORE: Pictures show police operation in full swing ahead of Rangers v Celtic at Ibrox Stadium

Police said the Vietnamese national has limited knowledge of Glasgow or Paisley and are worried for his safety. 

The 34-year-old is described as five feet and seven inches tall, with short black hair.

He was last seen wearing a grey baseball cap, a black zipper fleece, black jogging bottoms and blue and grey Reebok trainers. He may also have a red puffa jacket with him.