Fifteen closed-circuit television surveillance cameras (CCTVs) were set on fire early on Monday in Khok Pho district of Pattani province, police said.
Pol Col Suchart Asavachindakul, the Khok Pho police chief, said the incident militants set fire to motorcycle tubes and hung them on CCTVs installed on power poles, beginning around 4am.
Two CCTVs were burnt in front of Nurulhuda Mosque at Ban Yang Daeng in tambon Napradu, nine in the Khok Pho municipality, one in tambon Makrut, and three in tambon Naket.
Explosive Ordnance Disposal officers are trying to defuse the bomb. (Bangkok Post photo)
Also in Pattani, a 20kg bomb inside a fire extinguisher cylinder was found and defused in Sai Buri district on Monday morning.
The bomb was planted at one end of the bridge at Ban Payo on the Hutae Kolae - Payo road in tambon Kadunong.
A team of bomb disposal police rushed to the scene and defused it in about 30 minutes.
The bomb was found by rangers of Company 4201 of Rangers Task Force 22 patrolling the road after two youths were seen running away, arousing suspicions. Electrical wires connected to the bomb were found extending from the bridge to a roadside bush.