Widening the probe, police teams also fanned out to seven states to get definite leads in a desperate hunt for the bombers of the July 13 terror attack that left 19 dead and oover 130 injured.
A senior ATS official said the sketch of the suspect in the serial blasts based on eyewitness accounts has been prepared.
"The sketch of the suspect is ready. It will be circulated among the select and top investigating officials It will not be released to the public," he said.
Faiz Usmani, brother of Afzal Usmani, who is currently lodged in jail for his role in the 2008 Gujarat blasts, today died at 1:30 AM while he was undergoing treatment for hemiparesis and hypertension in the Lokmanya Tilak Hospital, doctors said.
Usmani, a resident of suburban Govandi, was picked up for questioning yesterday by Chembur's Crime Branch unit and as he was not feeling well was admitted to the Hospital in Sion at around 5:50 PM.
As he died on Jul 17, Usmani's family alleged that he was tortured in custody.
Maharashtra DGP Ajit Parasnis ordered a CID inquiry into the death. "A CID inquiry has been ordered into the death of Usmani by the DGP. The state CID will look into various aspects that resulted in his death," Joint Police Commissioner (Law and Order) Rajnish Seth said.