Lipis district police chief Supt Azry Akmar Ayob said the incident happened at about 8am when the suspect, aged 32, went to his grandmother’s house to eat but was told there was no food.
“Instead, the grandmother told him she wanted to take him for treatment as he was aggressive.
“The suspect went into the house to fetch a parang which he then used to slash the grandmother’s neck and back,” Azry told reporters here today.
Azry said the suspect, who is self-employed, then ran to his house about 600 metres away and slashed his father-in-law, who fought back and apprehended him with the help of a villager.
Earlier, the suspect had burnt his wife, aged 21, with embers from the stove.
“Before going to the grandmother’s house, the man had gone to his sister’s house at about 8am yesterday to eat.
“He fainted there. His wife heard about this and went to check on his condition. But her husband poked her face with embers from the stove and she ran off.
“After that, the suspect went to his grandmother’s house, about 100 metres away.”
Azry said police only arrived at the scene at about 3.50pm to detain the suspect as the Orang Asli village could only be reached using a four-wheel-drive vehicle.
He said the grandmother’s body was sent to Lipis Hospital for a post-mortem, while the suspect’s wife and father-in-law were sent to the same hospital for treatment.