Police searching for a missing teenage boy have released a CCTV image of a man and woman they want to speak to.

Thanh Van Bui was seen with the couple in Glasgow's Central Station last Friday.

The 15-year-old is thought to have boarded a train to England.

Earlier this week, the Evening Times revealed Thanh was found tending a cannabis farm in Scotland Street last month, but went missing from the Pollokshields area on Friday morning.

He was spotted with the couple in the busy city train station later that same day.

Police have urged the man and woman to come forward.

Anyone who recognises the pair is asked to contact police on 101.