The Chhattisgarh government today ordered a Central Bureau of Investigation inquiry into the 2013 Jiram valley attack by Naxals in which some prominent Congress leaders from the state were killed.

In reply to a discussion on Budget demand proposals of his department in the legislative assembly, acting Home Minister Ajay Chandrakar made the announcement.

The BJP government was serious about tackling the 'menace of Naxalism'.

Security forces were doing their job while development works were being carried out in the Naxal-affected regions, the minister said.

Speaking about the Jiram valley incident, the minister said it wasn't just Congress or the families of Nand KumarPatel and Mahendra Karma who lost their near and dear ones, but the ruling party leaders too lost their good friends.

The Bharatiya Janata Party members were deeply pained on losing leaders like Patel and Karma in the Jiram attack, he added.

Thirty-one people, including state Congress chief Nandkumar Patel, his son Dinesh, former Union minister Vidayacharan Shukla, former leader of opposition Mahendra Karma and former MLA Uday Mudliyar were killed.

The Centre had roped in NIA for the probe. The state government had also constituted a judicial commission.