Tyne Tees British Transport Police

British Transport Police said the group of men were reportedly acting aggressively towards some women on board a train travelling from York to Darlington.

New figures show the number of reports of incidents committed against young women and girls on public transport has risen by 71% in the North East.

British Transport Police said a group of men allegedly shouted and wolf whistled at victims before a man pulled down his trousers and underwear.