The handset, vital for probe into the blasts, was traced by Thane police Crime Branch to Kalyan township here with an autorickshaw driver, who had put his SIM card in it and been using it, they said.
Swooping down on various locations, NIA with the help of Tamil Nadu and Telangana Police, had last month apprehended four youths suspected to be part of a group sympathising with al-Qaeda and involved in the blasts at court complexes.
They allegedly used the handset and later dumped it.
The Thane police probe team secured the IMEI number of the handset and was searching for it since several months. About two weeks ago, the police team received information that the phone has been activated.
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Thane Police Commissioner Param Bir Singh told reporters here last evening that they were contacted by their Telangana counterparts for the recovery of the handset, which was vital for their investigation.
The autorickshaw driver, residing in Mumbra township near Kalyan, was questioned by multiple teams from Telangana, officers of the ATS and the city Crime Branch sleuths.
According to police, they have verified that the auto driver does not have links to any terror group.
They said the driver informed them he had found that handset discarded near Kalyan station. After finding it in good condition, he activated it using his old SIM card.
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