New Delhi: The Maharashtra and Karnataka Police both approached a Delhi court on Thursday seeking the custody of four of the seven Indian Mujahideen operatives, arrested for their alleged roles in various terror strikes, including those at Pune's German Bakery and Bangalore's Chinnaswami stadium.

Chief Metropolitan Magistrate Vinod Yadav decided to consider the pleas of the two states on December 21 and till then he extended police custody of all seven accused, saying he was doing so "in the interest of society."

Yadav extended by six more days, the police custody of suspected IM operatives Mohammed Qatil Siddqui, Gohar Aziz Khumani, Mohammed Adil, Abdur Rehman, Mohammed Irshad, Gayur Ahmed Jamali and Aftab Alam, brushing aside Jamali's counsel Mobin Akhtar's query to know the ground of extension.

"It (police custody) can go up to 30 days. The grounds have been mentioned in the application. I am exercising my discretion as of now in favour of the investigating agency considering the larger interest of the society," the CMM said.

The seven accused are needed to be interrogated further and are to be taken to Andhra Pradesh also to unravel their terror network, said sources in Delhi Police's Special Team, constituted to assist in solving various unsolved terror blast cases.

Karnataka police sought the custody of three of the seven IM operatives with Bangalore Anti-Terror Sqaud submitting to the Delhi CMM an order of the Bangalore ACMM for the trio's custody to ascertain their roles in the Chinnaswami Stadium blast in April, 2010.

The trio whose custody was sought by Bangalore ATS included Siddqui,Jamali and Alam.

Similarly, the Pune ATS too, armed with a local court order, approached the Delhi CMM for the custody of one of the seven arrested IM operatives, Siddqui, who is suspected to be involved in February, 2010 blast at German Bakery there.

"Today by a special order, aforesaid accused have been remanded to police custody of Special Cell in the above noted matter and as such the custody of the accused cannot be transferred to ATS Bangalore. In view of the above order, notify application for further consideration for December 21, 2011," CMM Yadav said, while deciding to take up the pleas of Pune and Banaglore ATS plea later.

Seeking custody of three suspected IM operatives, a Bangalore ATS official told the court that they needed to be taken to places where they stayed before triggering blast at Chinnaswami Stadium on April 17, 2010 as part of further probe even as Jamali's counsel opposed the plea saying he has never travelled out of his hometown Madhubani in Bihar.

Jamali, citing a high court order, requested the court for a copy of the FIR against him. The court asked him to file a formal application for the purpose.

Meanwhile, the court allowed the pleas of Jamali's counsel Akhtar and his brother Saifulla to meet him in custody at the office of Special Cell for thirty minutes on Thursday, as the same was not opposed by the Special Cell.

All seven accused are said to be involved in various terror cases, including Pune German Bakery blast, Bangalore's Chinnaswami Stadium blast, September 2010 Jama Masjid shooting and September 7, 2011 blast at the Delhi High Court.

All the seven IM operatives were arrested recently by Delhi police sleuths from various places in Delhi, Bihar, Chennai and elsewhere in the country.