An Indonesian maid was last night arrested for murdering her boyfriend, who was found dead with multiple head injuries and tethered to a railing with a dog leash around his neck. The body of the 45-year-old man, also an Indonesian, who worked as a gardener, was found in the backyard of his employer's three-storey house in Yuen Long after his girlfriend, who had two chop wounds to her head, called police. The 35-year-old woman, who did not work in the house at Greenery Gardens in Fairview Park Boulevard, told police she was attacked with a sickle when she ran to give help at 9.45am. A bloodstained sickle was found at the scene. The tied man was certified dead at the scene, while officers located the woman nearby with head injuries. Investigators said the pair had earlier argued about their relationship. Initial investigations showed they had a dispute at the house and attacked each other. Chief Inspector Tony Chan Chi-ho, of Yuen Long district crime squad, said the victim, wearing only shorts, was leaning against the railing in a squatting position. "The gardener was found with multiple chop wounds in the head," Chan said. "A leather dog leash was tied around his neck and the other end was linked to the railing." The woman was taken conscious to Tuen Mun Hospital. Chan said an autopsy would be carried out to establish whether the gardener died from suffocation or head injuries. Blood was found around the backyard and in the house. Officers believe the blood inside was from the injured woman when she ran out of the house. There was another domestic helper in the house, but she told police she did not see what had happened to the gardener.