Ahmedabad: A 28-year-old man from Rakhial was detained in Makarba in the city for allegedly being involved in cyber fraud activities using stolen credit card data provided by a network based in Jharkhand, said city police officers on Sunday.Acting on a tip-off, police reached a cafe in Makarba and located the suspect. Upon checking his mobile phones, the police suspected that the devices contained data related to cyber fraud.Preliminary questioning revealed that the suspect was purchasing mobile phones through e-commerce platforms like Croma, Vijay Sales, and Zepto using credit card data shared with him via a contact saved as Sagar J K. He then used to sell the phones, retaining a commission, and sending the remaining cash to Jharkhand using CDM (cash deposit machines).Police said he also admitted to using the stolen credit card data to pay utility bills, such as electricity bills of Torrent Power. The suspect's WhatsApp chats, Gmail IDs, and other stored data on his phones were examined, leading to the seizure of two mobile phones. Screenshots of WhatsApp chats, contact numbers, and Gmail credentials linked to fraudulent transactions were documented as part of the evidence.The suspect was brought to the Cybercrime police station for further questioning. He admitted that he acted on instructions from Jharkhand-based individuals and was involved in multiple financial frauds through e-commerce purchases and utility bill payments. A case was registered under relevant sections of the Bharatiya Nyaya Sanhita and Information Technology Act. Investigation is ongoing to identify other accomplices and trace the full extent of the fraud network.