The forces are in addition to the 90,000 central security personnel currently engaged in anti-Naxal operations in nine states -- Chhattisgarh, Jharkhand, Bihar, Odisha, West Bengal, Maharashtra, Andhra Pradesh, Madhya Pradesh and Uttar Pradesh.
Official sources said the additional forces have been sent mainly to Chhattisgarh, Jharkhand, Odisha and Bihar.
The decision has come after the Maoist killed 15 security personnel and a civilian in an ambush in Chhattisgarh's Sukma district.
The Centre has identified 33 districts in Jharkhand, Chhattisgarh, Bihar, Odisha, Maharashtra and Andhra Pradesh as highly sensitive as the highest number of violent incidents involving Maoists were reported in Lok Sabha elections in 2004 and 2009 and assembly polls in 2008, 2009, 2010 and 2013 in these districts.
