Charu Chaisong, 34, and his son snagged the bags, which also contained bulletproof vests, when they went fishing at the Yai Nim canal in tambon Samrong Tai. When they pulled the bags ashore, they found the weapons and gear.
Pol Maj Gen Sriwara Ringsipramanakul, commander of provincial police region 1 along with other senior officers went to inspect the scene.
The police found two black bullet-proof vests with the word "Police" printed on the front, one tear gas gun and four tear gas canisters. The Police Ordnance Division will examine whether the tear gas canisters are still usable and compare police and military stocks.
Pol Maj Gen Sriwara said the found weapons likely belong to crowd-control police in operation during clashes between the anti-protesters of previous government and the police. During that time, many police vehicles were destroyed and large numbers of vests and tear gas canisters were stolen.
After the National Council for Peace and Order ordered a crackdown on illegally owned weapons, the owners might have dumped them in the canal to avoid being arrested.