TWO teenagers were robbed at knifepoint in Southampton.

Two 14-year-old boys were approached by a group of three males, one of which was in possession of a knife, on Friday, September 6 at some time between 8pm and 8.35pm on Blackthorne Road.

They took a bike from one of the boys and a mobile phone from the other boy.

A man who was passing by then intervened and the three offenders ran off with the stolen items.

Now, police are appealing for information to help trace a passer-by who intervened.

Detective Constable Sophie Palmer, said: “I am appealing for anyone with information about this incident, in which a mountain bike and an Apple iPhone were stolen, to get in touch.

“We’re particularly keen to speak to the passer-by who intervened as he may have vital information to assist our investigation. If this was you, or you know who he is, please get in touch.”

Anyone with information should call police on 101 quoting 44190318405.