The far south of Thailand has been experiencing almost daily incidents of criminally and politically motivated violence, including incidents attributed to armed local separatist/extremist groups. On March 15, 2008, two bombs exploded at the CS Pattani Hotel in Pattani Province in southern Thailand. Two people died and thirteen were injured. A car bomb exploded in Yala Province on the same day, killing the driver. Although the extremist groups have continued to focus primarily on Thai government interests in the southern provinces, some of the recent violence in the area has targeted public places, including areas where tourists may congregate. In February 2007, Thai press reported that senior Thai officials expressed concern the violence in the south could move to Bangkok, particularly during Thai holidays and special occasions. On September 17, 2006, a series of bombs detonated in a commercial district of Hat Yai, killing one American citizen and injuring another. On August 31, 2006, a series of 22 bombs exploded inside commercial banks in Yala province, injuring 28 people. In 2005 two American citizens were injured when a bomb detonated in the Hat Yai airport. Attacks in the area have increasingly been targeted against commercial areas where foreigners congregate. The Department of State urges U.S. citizens to defer non-emergency travel to the far south of Thailand: Narathiwat, Pattani, Yala, Satun and Songkhla provinces, including the town of Hat Yai. If U.S. citizens must travel to these areas, they should exercise special caution and remain vigilant with regard to their personal security. Travelers should be aware that Thai authorities have on occasion instituted special security measures in affected areas, such as curfews, military patrols, or random searches of train passengers.