
Police are looking at the possibility those responsible had attempted to kill the whole family of four. They said the family was involved in a land dispute.
However, they are still treating the husband as a suspect.
Juthamas Pattanasang, 34, a rubber farmer of Tambon Thung Kha Wat in Lamae district, died on her way to hospital after consuming the contaminated milk on Tuesday morning.
Lamae superintendent, Colonel Phakhapol Thavishsri, yesterday said the insecticide had been introduced to the milk and coffee with a syringe.
Husband Samart Kongsung, 39, said they discovered the milk and coffee in their kitchen when they returned from morning rubber tapping.
Samart said none of the family members had purchased the goods and he told his wife not to touch them. She ignored him, he said.
He gave some of the milk to a dog, which collapsed about three minutes after consuming the milk.
Samart believed someone had tried to kill the entire family, and said his wife and her children from a previous marriage were known to like milk. He was known to like canned coffee drinks.
The investigation continues.
The Nation