Noida, Nov. 17 -- An 83-year-old man in Greater Noida was allegedly duped of over Rs.50 lakh in stock investment fraud between August and September, police said on Sunday. Police said the victim, a retiree from a private company, hails from Gurugram and lives at Knowledge Park, Greater Noida. In his complaint to the police, the 83-year-old said: "I received a phone call from an unknown number in early August. The caller innocently obtained information about me, my interests, etc. Later, through subsequent calls, I was enticed into investing in "foreign exchange trading". I invested $50 on August 13, and was told that I had earned a profit of Rs.4,900 the same day." Police said the scammers installed a mobile app on his phone for trading. "The 83-year-old transferred more than Rs.50 lakh in seven transactions. Later, when he tried to withdraw his 'profits', he was asked to pay more as charges," said a police officer, requesting anonymity. "I feel tricked, manipulated, and brainwashed into doing this. All my liquidity is exhausted and stuck in this scam. I even took a loan (overdraft) of Rs.10 lakh against a mutual fund to meet part of the investment threshold requirement," the complainant told police. The officer added: "The victim had not informed anybody about the incident. However, during a family trip to Badrinath in October, he was counselled after the family members sensed a change in his behaviour, and the scam came to light." Subsequently, the case was reported to the Cybercrime Branch police station on November 14. "We have registered a case under sections of cheating and cheating by personation of the BNS and the IT Act against unidentified suspects, and further investigation is underway," said Ranjeet Singh, SHO, Cybercrime Branch. In another incident of cybercrime, a 72-year-old man lost more than Rs.10.6 lakh after cyber criminals hacked into his mobile phone and stole the money. The victim, originally from Lucknow, is a resident of a high-rise in Noida Sector 74. In his complaint, the man has alleged: "On November 13, when he clicked on an advertisement on social media, he was directed to WhatsApp and a man posing as a bank official called him up." "He was asked to allow screen access and was sent an APK (mobile app) file. Once he clicked it, the caller gained access to his phone and siphoned off the money," police said. A case for cheating has been registered....