Bombs went off in four locations in Sungai Kolok district and two locations in Tak Bai district of Narathiwat and two electricity poles were destroyed in Yaha district of neighbouring Yala, they said.
Two locations in Than To district of Yala were hit by bombings, they added.
Insurgents launched attacks at one spot in Krong Pinang and two locations in Bannang Sata districts, also in Yala, according to police.
Police gave only sketchy details of the attacks which they said were believed to be a coordinated effort.
They said a Thai Muslim woman identified as Sarika Mama was killed and five injured in Sungai Kolok.