text: Maoists on Tuesday night opened fire on four separate CRPF camps in quick succession in Dantewada district of Chhattisgarh, triggering gunbattles but there was no immediate report of casualties.
  About 300 to 400 Naxalites carried out the attacks on the camps, where the paramilitary personnel and policemen were resting, at Chintangufa, where 75 CRPF men and a policeman were killed in the worst Maoist strike two weeks ago, Kanker Lanka, Potampalli and Bheji at around 1930 hours, sources said.
  The CRPF and the policemen retaliated, sparking intermittent gunbattles with the Maoists which lasted till 2130 hours.
  Chhattisgarh Additional Director General of police Ram Niwas told PTI that the ultras fired from a distance, which was responded to by the CRPF and the police. However, there was no casualty, he said.
  Sources said all CRPF and police camps in the area have been put on high alert after the incident.