POLICE would like to speak to this man in connection with an investigation into a series of malicious letters being sent to schools and colleges across the UK.

The man is believed to be from Merseyside and these images were captured on CCTV on a train travelling from Liverpool to Ormskirsk in March. He is believed to have got off at Ormskirk Station.

Anyone who believes they may know who he is is asked to call West Yorkshire Police on 101 ext 28212 or Crimestoppers on 0800 555 111 quoting reference 13130024152.