Scotland Yard has released two pictures taken from CCTV of a man they'd like to speak to about the incident.
"At this early stage, it appears the deceased was attacked in the shop by a lone male suspect," a police spokesman said."It is not known at this time whether any money was taken."Members of the public should not approach the man and are advised to contact police immediately."
A 55-year-old man who was murdered at a betting shop has been named by police as they warned the public not to approach a suspect they are hunting. Andrew Iacovou was pronounced dead at the scene of the attack in Morden, south London, on Saturday.
A post-mortem examination gave the cause of death as blunt trauma to the head.
Police are investigating the murder of a 55-year-old man at a betting shop.
Officers were called by London Ambulance Service to reports of a man suffering serious injuries at the bookmakers in Aberconway Road, Morden, south London, at 10.30am on Saturday.
The man, who has not been formally identified, was pronounced dead at the scene.A Metropolitan Police spokesman said it appears the man was attacked in the shop by a lone male suspect. It is not known at this time whether any money was taken.
Officers from the Homicide & Serious Crime Command are investigating the attack and a post-mortem examination is due to held at St George's Hospital, Tooting, today.Anyone with information should call the incident room at Sutton on 020 8721 4005, or Crimestoppers, anonymously, on 0800 555 111.
Mourners dressed in black and pink lined the streets to pay their respects to schoolgirl Tia Sharp, who was found dead in her grandmother's home last month.
A procession featuring a horse-drawn carriage, a pink stretched Hummer and a truck covered in floral tributes made its way into North East Surrey Crematorium, in Morden, followed by cars containing relatives.
The carriage, travelling behind a hearse filled with flowers, some spelling out "Tia", carried a pink and white coffin, while the truck displayed a mock-up of a BlackBerry mobile phone with a photo of the 12-year-old's face in place of the screen.