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ISLAMABAD: Maulana Masood Azhar , chief of terror group Jaish-e-Mohammad blamed by India for the Pathankot attack, has been detained by Pakistan. Masood Azhar's brother and several other associates have also been detained, reports in Pakistan media said.Islamabad also sealed several offices of JeM after India demanded action on the group and linked it to the fate of foreign secretary-level talks scheduled for Friday.While the detention of several individuals was announced in a press release from the Prime Minister's Office, there was no official word on Azhar's detention.Officials said Azhar, the dreaded terrorist and two other terrorists who were released from an Indian prison in 1999 in exchange for release of 155 passengers of the hijacked Indian Airlines plane, has been taken into protective custody after raids on several JeM offices.Pakistan has also said it's considering sending a special investigation team to Pathankot as more information would be required to carry forward the process of cooperation with India.The Pakistani action, which was reviewed at a high-level meeting chaired by Prime Minister Nawaz Sharif, come as the fate of the FS-level talks hung in balance.Terrorists belonging to the JeM are believed by India to be behind the Pathankot terror attack on January 2 in which seven security personnel were killed.A Pakistani PMO statement issued after the meeting today said it noted with satisfaction that as part of Pakistan's commitment to eliminate terrorism from its soil and the expressed national resolve not to allow the territory to be used for acts of terrorism anywhere.It said "considerable progress has been made in the investigations being carried out against terrorist elements reportedly linked to the Pathankot incident."Based on initial investigations in Pakistan, and the information provided, several individuals belonging to Jaish-e-Mohammad have been apprehended. The offices of the organization are also being traced and sealed. Further investigations are underway," the statement said.