The driver of Thai prime minister's secretary Niphon Prompan is seen injured in his car after he was attacked by supporters of former Prime Minister Thaksin Shinawatra at the Interior Ministry in Bangkok April 12, 2009. Thai Prime Minister Abhisit Vejjajiva declared a state of emergency on Sunday to quell political unrest and vowed to take tough action against protesters after they forced cancellation of an Asia summit. REUTERS/Stringer (THAILAND POLITICS CONFLICT IMAGE OF THE DAY TOP PICTURE) THAILAND OUT. NO COMMERCIAL OR EDITORIAL SALES IN THAILAND