A 17-year-old boy has suffered a facial injury after being wounded as he waited in a Grimsby bus station.
The attack happened at around 5pm on Friday, November 18, in the Victoria Street bus station, under the shelter of stand C.
The boy was seated on a bench with friends when he was approached by a man he did not know who shouted at him and caused a laceration to his face with an unknown sharp implement.
The attacker then left on a red BMX bike along George Street.
He is described as being in his mid 20s, of slim build, around 6ft tall with short dark hair.
Officers believe he was wearing a black hooded top and black jogging bottoms.
Anyone with information should call Humberside Police on 101, quoting crime reference number 2229941.
Alternatively, contact the independent charity Crimestoppers anonymously on 0800 555 111.