New Delhi, April 3 : A Delhi court on Friday extended the police custody of suspended Jammu and Kashmir (J&K) police officer Davinder Singh till April 10. Special Judge Munish Markan of Delhi's Patiala House Court extended his custody after the city police said that he needs to be confronted with three other accused in the case. The tainted Deputy Superintendent of Police (DSP) was nabbed from the Jammu-Srinagar National Highway on January 11 while ferrying two militants -- Naveed Babu alias Babar Azam, his associate Asif Ahmad and a civilian. Delhi Police's Special Cell had brought Davinder Singh to Delhi from Hira Nagar Jail in J&K earlier this month, for interrogation in another case. The custody of the other accused -- Javed Iqbal, Syed Naveed Mushtaq and Imran Shafi Mir -- was also extended till April 10 by the court on the police 's plea. The court had earlier sent Mushtaq and others to the custody of police till April 3 after the city police claimed that they were planning to execute terror attacks in the national capital and other parts of the country. The police, on Friday told the court that their interrogation was required to unearth the larger conspiracy and role of the accused, to trace the details of the financial transactions and to verify and trace other offenders. The Delhi Police had registered an FIR under Section 120B (criminal conspiracy) of the Indian Penal Code (IPC). The FIR said that the youths of Jammu and Kashmir and Punjab are being trained to carry out terrorist activities. It has also mentioned D Company and gangster Chhota Shakeel. Davinder Singh was taken into custody under this FIR, although his name is not mentioned in it. /IANS