The Delhi police probing the Shraddha Walkar murder began a search operation in Mira Bhayandar creek on Thursday to look for a mobile phone of accused Aftab Poonawala. Police sources said the phone’s last location was the creek under the railway bridge as the alleged killer flung the device into the water to destroy evidence, earlier this month before his arrest.

The police have found that Poonawala was using two mobile phones. He was perhaps alerted after the Manikpur police in Vasai questioned him on October 23 and November 3 during their investigation into Walkar’s disappearance. A Delhi police source said Poonawala broke his SIM card and threw the phone into the Bhayandar creek, after he was questioned the second time.