The official had said that an improvised explosive device (IED) was found at Ahmed's house along with explosives and a pistol.
It is suspected that they have associates in some districts of the state, a senior officer of the Special Task Force (STF) of the Kolkata Police said on Tuesday.
Remarks by two former CMs over the arrests of the two men by the UP Police’s ATS have kicked up a row in the state, where assembly polls are slated early next year.
The Anti-Terrorist Squad of the UP Police on Sunday said it had arrested two terrorists belonging to Al-Qaeda supported 'Ansar Ghazwatul Hind' from the outskirts of Lucknow.
It said Al-Qaeda's strategy in the near term is assessed as maintaining its traditional safe haven in Afghanistan for the Al-Qaeda core leadership.
The court allowed an application moved by Delhi police, which had sought more time to complete the probe against Sabeel Ahmed.
Lodged in Tihar jail, Al-Qaeda man moves court seeking nod to work as doctor, assist prison authorities
'His experience and expertise being a medical professional would be helpful for dealing with the surge in COVID cases and treatment of inmates in central jail, Tihar,' the application said.
After September 11, 2001, attacks on the United States carried out by an Al-Qaeda cell under bin Laden's orders, the West spent billions of dollars trying to defeat radical Islamist extremists.
President Gotabaya Rajapaksa under a special gazette notification issued on Tuesday proscribed the radical groups under the Prevention of Terrorism (temporary) Provisions Act.
The case was registered by the NIA based on information about an al Qaeda-inspired module sprouting and operating in Bengal and Kerala under the leadership of Hasan.
The apex court on Thursday cleared Sheikh and his three Pakistani accomplices in the case of all the charges, ordering that Sheikh and others be immediately freed from jail.
Omar was arrested in February 2002 while Pearl was still missing, and boasted to a Karachi court that the journalist was already dead.
The apex dismissed the Sindh government's appeal against the Sindh High Court's decision to overturn the conviction of Sheikh for the 2002 beheading of Pearl.
In a statement published on the US State Department's website on Tuesday, Pompeo implicated some countries as 'terror hubs', drawing criticism from several quarters.
Pearl, the 38-year-old South Asia bureau chief for The Wall Street Journal, was abducted and beheaded while he was in Pakistan investigating a story in 2002.