Musa is believed to be from Bahawalpur, Pakistan. A senior officer said he allegedly underwent training along with the militants who attacked Mumbai on November 26 last year.

Deputy Commissioner of Police (Special Cell) Alok Kumar confirmed that the police are tracking Musa but did not want to share further details at this point.

Sources said the police are also working on intelligence inputs about some other militants said to be planning blasts in Delhi and Chandigarh on or around the Republic Day. This group is believed to have held a meeting in Rawalpindi sometime in the first week of December.

Asked about the two specific threats, Joint Commissioner of Police (Special Cell) P N Agarwal said the police have received several intelligence inputs and are working on them.