By S A Ishaqui

Hyderabad: A Special Investigation Team (SIT) has been constituted to step up the probe into the threat letter sent to Andhra Pradesh High Court Chief Justice Nisar Ahmed Kakru, a senior police officer said on Friday.

Already five suspects had been questioned and police expressed confidence that they would be able to crack the case in the next couple of days.

"So far five suspects, who were taken into custody, have been interrogated. We have got some leads and we will crack the case in the next 2-3 days," Hyderabad city commissioner of police, Mr A.K. Khan said here. SIT has been formed to speed up the probe, he said.

Police sources said a stamp paper vendor and a notary advocate from Ranga Reddy district were among those picked up for questioning as part of the investigation after Charminar Police registered a case on Wednesday.

The letter, sent last week to Kakru, had reportedly threatened to physically harm the judge over his remarks after the Joint Action Committee (JAC) of Telangana Lawyers had boycotted court proceedings on March 8 to protest the attack on its members allegedly by TDP activists.