Thiruvanathapuram: An RSS worker was hacked to death tonight allegedly by a gang led by a history-sheeter near here, police said.

They said 34-year-old Rajesh's left hand was chopped off in the attack around at 9 pm.

Police said an investigation has been launched and search is on for assailants.

BJP state president Kumanam Rajasekharan alleged that the CPI-M was behind the attack, a charge denied by the district leadership of the left party.

The BJP has called for a state-wide hartal tomorrow, the state BJP chief said.

Police are maintaining a strict vigil and clamped prohibitory orders for three days from yesterday after BJP's Kerala unit office here was vandalised and the house of CPI-M state secretary Kodiyeri Balakrishnan's son Bineesh Kodiyeri was attacked.

Earlier, 10 people, including four from the student and youth wings of CPI-M, had been arrested in connection with the violence in the city yesterday.