Kolkata: The Enforcement Directorate (ED), Eastern Region, has lodged a complaint with Bidhannagar Police alleging that the investigating officers of several important cases received a few fake e-mails allegedly in the name of Eastern Regional Special Director Yogesh Gupta. It was also alleged that several persons were threatened through these e-mails. On the other hand, the ED officials raided five premises across the city in connection with Rose Valley financial scam case. Also Read – Rain batters Kolkata, cripples normal lifeSources informed that on Saturday some officers of the rank of Assistant Director received e-mails containing several directions regarding the investigation of a few cases. As the directions were mostly in favour of the accused persons, investigating officers became suspicious and got in touch with Gupta. When they contacted Gupta, it was found that the e-mail ID which was used was not Gupta’s. While checking the messages, several persons called up the ED office and informed that they have got certain notices very similar to the e-mail threat messages. Also Read – Speeding Jaguar crashes into Mercedes car in Kolkata, 2 pedestrians killedWhile checking them, the ED officials found that the e-mail address which was used to send the notices is the same one from where the messages had been sent. Immediately, the ED headquarters in Delhi was informed. During primary investigation, the ED officials came to know that one Anantha Sundar Rajan posed himself as Gupta and sent those e-mails. Later, one officer of Assistant Director rank submitted a written complaint to Bidhannagar Police against Rajan. Upon receiving the complaint, the Cyber Crime Police Station has already initiated a case on charges of cheating, forgery and identity theft of the Indian Penal Code and Information Technology Act. On the other hand, the ED officials conducted raids at five premises across the city in connection with the Rose Valley case. Sources informed that each five-member team raided several office premises including the residence of a senior Rose Valley official. It was alleged that after the CBI took over the charge of the Rose Valley and other financial scam cases, this person met with some important persons and politicians and demanded money with the promise to settle the matter.