THREE youths threatened schoolchildren with a Rotweiler to intimidate them into giving them money.

The boys attempted to steal cash from a number a passengers on the 3.56pm train from Dartford to Cannon Street, on April 25.

During the journey the trio approached their victims and said they needed money to help feed their dog.

They then threatened to set the black Rotweiler on them if they refused to hand over any money.

The youths eventually got off the train at Abbey Wood station after slapping one of their victims.

The boys are all aged 15 to 16. One is of a chubby build with ginger hair, while the other two are of slimmer build, one with black hair and one with blond hair.

Anyone with information should call British Transport Police on 020 7922 6213.