MALAPPURAM: Thiroorkkadu native Naufal, who was arrested for threatening Swapna Suresh over the phone, was released on station bail. Nowfal's mobile phone is being examined by Cyber cell. The Mankada police, which is investigating the case, reached Ernakulam yesterday and recorded the statement of Swapna Suresh. Police Inspector U.K. Shahjahan said that a detailed investigation is going on in connection with the incident.