Two men are being hunted by police today after a dramatic breakthrough in the search for the killers of jogger Margaret Muller. The men were spotted sprinting from Victoria Park in Hackney moments after the American artist was brutally stabbed to death. A witness, who was on his way to work, told detectives the men ran from the rose garden area of the park, where the 27-year-old artist was attacked at about 8am on Monday, towards Cawley Gate.