Mixed race two-year-old boy's collar bone broken in racist attack on a train after black passenger started hurling abuse at his mother Attacker targeted the mother because the toddler appeared to be mixed race The woman was dragged by her hair and the boy flipped out of his pushchair Police have identified the suspect on CCTV and are appealing for information A toddler has been left with a broken collar bone after he and his mother were attacked in broad daylight because the little boy appeared to be mixed race. The two-year-old was tipped out of his pushchair and injured when a black man started hurling racist abuse and then went for his 30-year-old mother at Highams Park railway station in east London. Police fear the suspect was attacking the unnamed woman, who is also black, because the child had lighter coloured skin and may have been mixed race. As the mother tried to get off the train the apparent racist grabbed her by the hair, dragging her to the ground and knocking over the pushchair, badly hurting the toddler. Attack: Police are looking for this man, seen here shouting abuse, as he is alleged to attack a two-year-old boy and his mother in a racist assault The woman and her son were first approached by the man at Walthamstow Central Station, east London, at around 3.03pm on Sunday June 23, and as they boarded the 2.47pm Liverpool Street to Chingford train. Investigating officer Detective Constable Gerry Hughes said: 'When the train arrived at Highams Park station, the victim left the train with her pushchair. She was assaulted by the man, who pulled her hair, dragging her to the ground along with the pushchair. The man then made off from the scene. The victim was left understandably shocked but uninjured. Her son was taken to hospital where he was diagnosed with a fractured collar bone. He was later discharged from hospital. This was an unspeakable attack on a mother and son, and we are determined to find the man responsible. I'd urge anyone who has any information into the incident, or recognises the man pictured, to come forward and assist officers in this investigation.' Close up: This man is alleged to grabbed the woman by the hair to the ground and knocked over the pushchair injuring the toddler A full search of the area was conducted but the man could not be found and British Transport Police have now released CCTV images of an apparent black male they wish to speak to in connection with the incident. A British Transport Police spokesperson said: 'We know it was a racist attack because of what the mother reported the man as saying. He was commenting on the colour of the child's skin which he was saying was slightly lighter in colour that the mother's.' Anyone with information is asked to call 0800 40 50 40 quoting background reference B9/LNA of 24/06/2013, or Crimestoppers, anonymously, on 0800 555 111.