Maoists on Monday killed seven people, two of them policemen in Chhattisgarh and the other five CPI(M) members in West Bengal.
The rebels have called a two-day shutdown on September 13-14 in six states including West Bengal and Chhattisgarh.
The CPI(M) activists were killed in West Midnapore district bordering Orissa, about 200 km southwest of Kolkata.
“We are worried. It is true there are insufficient forces in the area and the Maoists are taking advantage of it and also of the (topography) of the area. We are taking steps,” said Manoj Verma, superintendent of police, West Midnapore.
“The Maoists have killed daily labourers only to create panic in the area.
Trinamool supporters have helped the killers. They were killed because they are our supporters and wanted peace,” said Himangshu Tripathy, zonal committee secretary, CPI(M).
In Chhattisgarh, the ultras shot dead two security persons in the early hours of the day at a point barely 100 metres from a police station in Dantewada.
On hearing the gunshots, the security forces rushed to the spot only to find some leaflets left by the rebels, besides the two bodies. Both of them belonged to the Dantewada district police.
Bastar IGP T.J. Longkumer told HT the two stepped out of the police station, 520 km south of Raipur, early morning and were surrounded by left-wing extremists, who fired on them, killing them on the spot.
The heavy rain had made the toilet of the police station unusable and hence the policemen, Head Constable Devnath Nag and Constable Padumlal Bhuarya, had to go out, Longkumer said.
“The additional forces rushed to the spot, which was not more than 100 metres from the Bhejji police station, after hearing the gunshots but the rebels had fled,” he said.
Anticipating that there are armed Maoists in the nearby thickly forested areas, the security forces have launched intensive search operations.
In another incident in Kanker district, an hour-long encounter between the police and the rebels took place at Pakhanjur, about 250 km south of Raipur. There was, however, no report of any casualty.