Police say 12 people were injured by several explosions set off by suspected insurgents in a city in Thailand's restive south.

Police Col. Jamlong Suwalak says the improvised bombs exploded today night at 14 places in Yala, including commercial district and banks. Two devices that did not explode were also found.

Yala Hospital nurse Netchanok Sintiratti says an 11-year-old boy is among the injured civilians.

She said all of the injuries were minor.

Yala is one of the three Muslim-majority provinces in predominantly Buddhist Thailand.

More than 5,000 people have been killed since an Islamic insurgency began in the sub-region in 2004. The insurgents have not issued specific demands but are generally believed to be fighting for an independent Muslim state.