A bus bound for Phuket is seen on its side in Khirirat Nikhom district in Surat Thani province on Sunday. (Photo by Supapong Chaolan)SURAT THANI: Fifteen passengers were injured when a tour bus heading from Bangkok to Phuket overturned in Khirirat Nikhom district of this southern province on Sunday morning, police said.+++++++++++++++++++Published caption::A bus bound for Phuket is seen on its side in Khirirat  Nikhom district of Surat Thani province yesterday. Fifteen passengers were injured. Supapong Chaolan