LUCKNOW, Aug. 13 -- It began with a Facebook 'friendship' with a woman who claimed to be from England and ended with a Lucknow youth allegedly losing Rs.68 lakh to a sophisticated cyber fraud network, according to the UP Special Task Force. The STF has now arrested a 37-year-old Nigerian national allegedly wanted in the case, unravelling the chain of deception that investigators said was built around a fake foreign identity, promises of expensive gifts and repeated demands for money. Nwogu Obed Osinachi, a native of Imo State in Nigeria, was arrested from a rented accommodation in Delhi's Burari area on Tuesday, STF officials said. Investigators allege that he was part of a network that created fake social media profiles using photographs of foreign women and targeted Indian users. For the Lucknow victim, the deception allegedly began when he was contacted through a Facebook profile portraying its user as an England-based woman, said additional SP Vishal Vikram Singh. According to the STF, the fraudsters then changed identities. The people communicating with the victim allegedly began posing as customs, income tax and GST officials, claiming that the gifts and foreign currency could be released only after payment of customs duty, taxes and other charges. Eventually costing the Lucknow resident around Rs.68 lakh. When the victim approached police, investigators found that the fraudsters had also tried to lend credibility to their claims by sending him a purported Royal Bank of Scotland certificate. The document was allegedly used to make the victim believe that the promised money and transaction were genuine. The case was registered at Madiaon police station, following which the STF's cyber team began to identify the people behind the online identities....