A man was stabbed to death in his bedroom in Chaiyaphum's Chaturas district early Tuesday.
Police said there were signs of fighting in Wutthichai Wamin's room and the 35-year-old had been hit on the head with a hard object and was stabbed more than 30 times.
Chaturas police station was alerted to the incident at 1.35am.
His sister, Sunisa Wamin, 38, told police that she was awakened by a dog barking on the direction of her brother's bedroom.
When she went to check she found her brother badly injured with stab wounds in the toilet completely naked.
She said Wutthichai was barely breathing and she tried to dress him to take him to hospital but he died shortly after.