<span style="color: #222222;">The National Investigation Agency, NIA has taken over the probe into the May 1 Naxal attack in Kurkheda village of Gadchiroli district in Maharashtra. 15 policemen and one civilian were killed in the attack.</span><br />'' <span style="color: #222222;"> <br />''NIA team has arrived in Gadchiroli and visited the incident site. An improvised explosive device was used to carry out the blast when the police team was travelling in a private vehicle to Kurkheda village to take stock of the situation after Naxalites set on fire vehicles and machines.<br />''<br />''Six persons along with Maoist cadre Narmada and her husband Kiran Kumar have been arrested in the case. </span><br />