BANGKOK : Thailand on Tuesday extended emergency rule in most of its violence-plagued deep south for three more months, a government spokesman said. The decree, which was first introduced in 2005 and covers most of the Muslim-majority provinces of Yala, Pattani and Narathiwat, has been criticised by rights campaigners who say it effectively gives the army legal immunity. The state of emergency allows the military to detain suspects for questioning without charge. Suspected insurgents have waged a violent campaign in the region since early 2004, leaving more than 4,500 dead. "There are still attempts to use violence to attack officials and innocent people," deputy government spokesman Supachai Jaisamut said.