A retired teacher has been decapitated by insurgents in Thailand's restive deep south, police said on Wednesday.

Head and body of the 65-year-old victim were found at two locations some 100 meters away on late Tuesday night in Pattani Province, some 1,000 km south of Bangkok.

A written note was found close to the victim's head, saying the killing was in revenge of the authorities' arrest of innocent people, local police told Xinhua stringer.

It is the fifth such killing in the country's deep south, which has fallen into unceased violence since the beginning of last year.

Meanwhile, three bomb attacks were carried on in neighboring Narathiwat Province on Wednesday.

The bombs, planted on road of patrolling troops, near police station and in front of government building, caused no casualties.

Trying hard to nab insurgents behind the violence, the authorities warned local residents not to get involved in possible protests instigated by the militants.

Messages recently circulating in the region urged locals to gather at a designated point to demand the release of certain suspects detained by police, the state-run Thai News Agency quoted regional military spokesman Col. Arkhom Pongprom as saying.

The authorities have blamed revived local separatists for the ongoing violence, which has claimed around 700 lives in the past 17 months.

Though the government has beefed up security in the deep south, insurgents carried on the attacks, planting bombs, setting fires or shooting people on an almost daily basis.

Source: Xinhua