BANGKOK, May 24 (Xinhua) -- A police helicopter crashed in Thailand's Prachuap Khiri Khan province on Saturday, killing three people, the Thai police said.

According to local media reports, the Bell 212 helicopter was on a training mission when it went down around 1:00 p.m. local time near the Wing 5 Air Force Base. 

The police said the cause of the accident will be investigated.