In Chhattisgarh, 75 CRPF including a district police constable were gunned down by the Naxals in Dantewada district on Tuesday morning. Seven of the injured CRPF men are being treated in hospital. These security personnel were on a joint "Operation Green Hunt" offensive in the thick forests of Mukrana. The incident took place between 6 and 7 on Tuesday morning when nearly 80 personnel comprising CRPF and state police were returning after opening a road for the troops to begin an operation against Naxals. <br/><br/>Dantewada Superintendent of Police Amresh Mishra said the Naxals first blew up a vehicle carrying the CRPF personnel near Chintalnar-Tarmetla village in the district. Immediately after the blast, the CRPF personnel and a few police personnel tried to take cover when they came under heavy fire from hundreds of Naxals, well entrenched on the adjacent hillock. The CRPF team had been camping in the interiors of Tarmetla jungles for the last three days as part of a combing operation and area domination exercise.<br/><br/>Prime Minister Manmohan Singh called Home Minister P Chidambaram over telephone to make an assessment of the situation. Later, a high level meeting was held at the Prime Minister's residence. The Home Minister Mr. P. Chidambaram also attended the meeting. The Home Minister said, something must have gone drastically wrong in the joint operation as the personnel seemed to have walked into a trap.<br/><br/>In Bihar, an alert has been sounded in view of the Dantewada attack. Director General Police, Neelmani told AIR correspondent that all the police stations in the naxal infested areas have been instructed to be extra vigilant. Railways have decided that a pilot engine will run ahead of a group of trains in such areas. The speed of Rajdhani trains has also been restricted to 75 kilometers per hours.