Interfaith outreach.

YALA — SUSPECTED insurgents killed two Buddhists in a drive-by shooting on Sunday in Thailand’s deep south, police said, the latest in an upsurge of violence in the troubled region bordering Malaysia.

The attack took place in front of a mosque in Pattani province a day after twin bombings by suspected rebels killed at least seven security forces, marking one the region’s deadliest days in several months.

The intensity of violence in Yala, Narathiwat and Pattani has increased this year and attacks include powerful roadside bombings, an assassination attempt on a provincial governor and a deadly weapons raid on a poorly guarded army barracks.

Thailand’s deep south is among Asia’s most violent places, with more than 4,500 people killed since 2004 in gun and bomb attacks the authorities blame on militants fighting for autonomy for the region’s ethnic Malay Muslim majority.