A jawan of the elite CoBRA battalion was injured in a fierce gunbattle with Maoists at Hatipota village in West Midnapore district, while armed encounters took place at Dharampur, Silda and Kalsibhanga areas during combing operations in the district on Thursday.
Police said Awal Singh of CoBRA 200 battalion was critically injured and rushed to Midnapore Medical College and Hospital.
"Situation at Jangalmahal is very tense now," police said.
Maoists also blasted two powerful landmines at Dharampur, and another at Kalsibhanga village at Salboni to resist a combing operation by the combined forces but none was injured in either of the incidents.
A group of Maoists ransacked and burnt down the CPI(M)'s local office at Silda early today.
The ultras also went on the rampage at Etela forest beat office near Silda and burnt down official documents.
Meanwhile, trial proceedings of PCPA leader Sasadhar Mahato and seven other party workers were today shifted from Jhargram SDJM court to Midnapore district court.
Police said the trial proceedings of Mahato and others under UAPA would commence from April 8.