COLOMBO, Aug 26 (Reuters) - Sri Lankan security forces defused three suspected Tamil Tiger rebel bombs on Sunday, including one in the ancient central hill capital of Kandy. The discovery of one bomb in Kandy comes on the eve of a visit to the island by senior Myanmar military junta figure Lieutenant General Thein Sein, who is due to attend an annual Buddhist pageant on Tuesday. "Police are conducting investigations to find out the nature of the explosives they used," police spokesman Jayantha Wickramaratne said, adding that the device was a Claymore mine like those used in a spree of Tamil Tiger attacks on troops in recent months. "It was definitely the Tigers." Witnesses in Kandy said the bomb had been placed next to a wall in a sidestreet. Security in the town was heavy, with troops conducting spot body checks. The Liberation Tigers of Tamil Eelam (LTTE), who bombed Kandy's venerated Temple of the Tooth in 1998 and are seeking to carve out an independent state in north and east Sri Lanka, were not immediately available for comment. The Kandy pageant is the island's premier festival, attracting thousands of people each year, and climaxes on Tuesday, when an elephant will carry the sacred Buddha's tooth relic during the hours-long procession. Earlier on Sunday, troops discovered two Claymore mines near the coastal village of Kalpitiya around 70 miles (110 km) north of the capital. "We recovered two Claymore mines, each weighing 15 kg (33 lb)," a spokesman for the Media Centre for National Security said, asking not to be named. "They were rigged to explode simultaneously using a remote control. "We're not sure who the intended targets were -- maybe police vehicles or politicians who use that road," he added. The discoveries come amid near daily ambushes, killings and land and sea clashes between troops and rebels in a new chapter in a two-decade civil war that has killed nearly 70,000 people since 1983.