Indian Prime Minister Manmohan Singh Saturday cautioned the country's top police brass that terrorists might attempt to disrupt the next general elections due in May 2014 and the assembly polls in some states. "There is a likelihood of attempts (by terror groups) to disrupt the forthcoming Lok Sabha (Lower House of Parliament) and assembly elections. The security forces need to be careful," the Prime Minister told a gathering of state police chiefs in the Indian capital. The Prime Minister asked the police chiefs to do the needful to prevent any kind of communal riots. "During the current year some states have witnessed a substantial increase in the number of communal incidents. We cannot afford such a state of affairs. Once disturbances occur they must be tackled with utmost firmness, without prejudice, fear or favor," he said. The northern state of Uttar Pradesh's Muzzafarnagar town had couple of months back witnessed communal riots which claimed the lives of over 60 people and rendered many homeless.