Suspected insurgents triggered two roadside bombs before a visit to southern Thailand by the prime minister, killing two people and wounding three others, AP quoted police as saying. One explosion, triggered by a mobile telephone, took place just 300 meters (yards) from where Prime Minister Abhisit Vejjajiva opened an inter-provincial road three hours later, said police Maj. Gen. Sayan Krasesaen. The opening ceremony proceeded without incident. One soldier was killed and three policemen were wounded in the attack in Yala, one of three provinces in the south where about 4,000 people have been killed since an insurgency flared in January 2004. About an hour after the first explosion, a second bomb was set off by a mobile telephone in another area of Yala, killing one soldier, the police officer said.