Additional Sessions Judge Reetesh Singh extended the judicial custody of the accused after he was produced before the court on completion of his two days' judicial custody in Tihar central jail.
The court had on November 28 sent Mintoo to Delhi Police custody for seven days which was later extended till December 12.
The Delhi Police had earlier submitted that they needed his custody to know about the role of "insiders and outsiders" who assisted him and five others in fleeing from Nabha jail in Patiala.
According to Delhi Police, one loaded pistol and six live cartridges were recovered from his possession. He was earlier a member of Babbar Khalsa International and later floated his own group, they said.
Mintoo was nabbed from a Delhi railway station, a day after he escaped with five other inmates from the prison.
UP Police had on November 27 arrested the alleged "mastermind" of the daring daylight jailbreak, Parminder Singh, from Kairana in Uttar Pradesh's Shamli district when the getaway vehicle was stopped at a police picket.
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