A Muslim man was shot dead in a teashop in Ban Buenae Padae in Tambon Kadungnong, Pattani's Saiburi district, on Thursday, police said.
The victim was identified as Dohloh Deeyoh, 66, of Moo 4 village.
He was shot once in his head with a 9mm pistol.
Witnesses told police that Dohloh returned from his rubber plantation and to drink tea at the shop as usual. Two men arrived on a motorcycle and one of them walked into the shop and shot the man and fled the scene.
Police said the shooting was probably motivated by a personal conflict or it might have been an act of insurgency.