Multiple bombings have killed at least four people and injured 74 in Thailand's deep south, next to the Malaysian border.

Many of the victims are in a critical condition with burns over 50% of their bodies.

The bombs were planted in two motorbikes and a car and set off at a karaoke bar, the Tae Chiew Clan charity association, and the Merlin Hotel.

Thai police suspect that the bombs were planted by a Malaysian loyalist group called the Runda Kumpalan Kecil (RKK).

Around 4,800 people have been killed in the Thailand/Malaysia border area since 2004.