New Delhi, Sep 17 - Delhi Police Thursday filed four supplementary charge sheets against a suspected Indian Mujahideen terrorist, charged with hacking the wi-fi system to send e-mails to media houses just before last year's Sept 13 serial blasts in the national capital.

Submitting the charge sheet in the court of Additional Chief Metropolitan Magistrate Kaveri Baweja, the special cell of Delhi Police sought prosecution of Mohammed Akbar Ismail Choudhary under various provisions of the Indian Penal Code (IPC), the Unlawful Activities (Prevention) Act and the Explosive Substances Act for his alleged involvement in the serial blasts at Connaught Place, Barakhambha Road, Greater Kailash Part I and Tilak Marg areas of the national capital.

The police filed four separate supplementary charge sheets against Choudhary, 27, who had allegedly arranged a car of his elder brother Mohsin (who is absconding) to Mansoor Asghar Peerbhoy and others for helping them to travel across Mumbai to hack a wi-fi system of a private firm to send e-mails to media organisations before the serial blasts Sep 13 last year.