BANGKOK,July 22 (Reuters) -
Separatist militants in Thailand's Muslim deep south have killed three Thais, including two security officers, in a spate of violence days after an unknown rebel group announced a "ceasefire".
One soldier was killed and five wounded on Tuesday when their patrol was ambushed in the southern province of Narathiwat, one of three provinces where a four-year-old insurgency has killed more than 3,000 people.
Gunmen fired on the 12-man patrol after setting off a large roadside bomb, police said.
The near daily gun and bomb attacks have not stopped since the Thailand United Southern Underground, which claimed to represent 11 insurgent groups, announced a "ceasefire" last week.