A 13-YEAR-OLD boy was pushed off his bike by a thief as he rode through a park.

The teenager was cycling through Buckhurst Rec between 6pm and 6.30pm on Sunday when he was approached by his assailant.

The man demanded his mountain bike before pushing the boy off it and riding off in the direction of Sussex Square in Walcot.

The offender is white, aged over 18 and was wearing a grey hooded top and green jeans and carrying a Tesco shopping bag.

The stolen bike is a black and silver Shockwave mountain bike.

Anyone with information should call PC Mark Harris at Swindon police on 0845 4087000 or Crimestoppers, anonymously, on 0800 555111.