A man in Satun province was killed on Wednesday morning when a grenade he was cleaning exploded.
The man had been keeping the grenade in his house for a year, police said.
Prasert Chuayjit, 59, was killed in his house in Ban Tha Chin village in Tambon Klong Khud, Muang district, at around 7am.
The blast tore off his left arm and the shrapnel disfigured his face.
Pol Colonel Witchaphan Chantaraporn, commander of the investigation division of the Satun Police head office, said Prasert had no record of violent crimes or political violence.