New Delhi: The National Investigation Agency (NIA) is likely to file its chargesheet in the Delhi High Court blast case in a court her on March 12, indicting the two Jammu and Kashmir youths, arrested for their alleged roles in the September 7 blast.

According to the court sources, NIA sleuths told District Judge H S Sharma that they would file charge sheet on March 12 against Amir Abbas Dev and Wasim Akram Malik, who were arrested for their alleged role in the blast last year in which 17 people were killed and over 90 were injured.

Meanwhile, the court today extended till March 13 the judicial custody of Malik, whom the probe agency has dubbed as a 'key link' in the conspiracy behind the blast outside the gate number 5 of the high court.

Malik was produced before the court during an in-chamber hearing after expiry of his two-week judicial custody and according to the sources, the judge extended his judicial custody till March 13.

The court had on Monday extended the judicial custody of Dev till March 12.

According to the NIA, information about Malik was given by Azhar Ali, a Hizbul Mujahideen module, who is in Kotbalwal Jail in Jammu since 2009.

The NIA had seized three mobile phones from Jammu and Kishtwar residences of Malik, a Jammu and Kashmir native studying Unani medicine in Bangladesh, during the probe.

Dev, a native of Jammu and Kashmir, was on September 16 arrested by the NIA for sending terror e-mails to media groups after the September 7 blast.

A magistrate had earlier recorded Dev's statement under Section 164 of the CrPC in an in-camera proceeding.

A statement recorded by a magistrate under section 164 of the CrPC bars the accused from resiling from it on his depositions during the trial and make him liable for prosecution for perjury if he does so.