TAIF: Authorities are checking the bank accounts of the guardians of four teenagers arrested Wednesday for withdrawing SR2 million from automated teller machines (ATMs) by using game cards similar to bank cards. According to sources close to the investigations, it was confirmed that about SR1 million was found in the possession of some teenagers while others hid large amounts of cash under the seats of their cars. Sources expect formation of a high-ranking security committee to unravel more details on the case wherein security and banking breaches of this magnitude have taken place for the first time. The game cards used by the teenagers, investigations found out, were given to them by a relative. By chance, one teenager discovered he could use the card to withdraw the same amount dispensed to the last customer using the ATM. It also turned out that the withdrawals started since September last year and continued ever since. The teenagers chose dawn as favorite time to withdraw cash from the ATMs. Security authorities have been provided with details of the withdrawn cash from the bank's assets, which did not affect the clients' accounts. After several incidents of illegal withdrawals came to light, bank authorities were in the process of installing new security systems into the ATMs, but the arrested teenagers allegedly used the machines still using the old system, sources said. They added that the teenagers used two cash machines in Hawiya and a third on Hassan Bin Thabit Street and a fourth in Al-Qamariya District in Taif. Investigations revealed that the four teenagers bought five cars, two Camrys, two Lexus and one Datsun, and sold three of them in the last few months.