Indonesia's president has ordered police to find those behind two bomb blasts that killed 22 people in a Christian town, and said he would cut short an overseas trip if authorities could not handle the situation. Quoted by the official Antara news agency after arriving in Hanoi late on Saturday, Susilo Bambang Yudhoyono said he would not speculate on who carried out the attacks in Tentena, Reuters reported. "I have spoken to the vice president and the chief security minister. If this problem cannot be dealt with, I will return to the country," Yudhoyono said. "I have instructed the authorities to catch the perpetrators." Yudhoyono had just touched down after visiting the United States. From Vietnam, he will travel to Japan.