Greek police say they have foiled a car bomb attack outside the offices of Citibank in an Athens suburb. Police spokesman Panagiotis Stathis said the bomb squad destroyed the powerful time bomb left in the suburb of Kifissia before dawn Wednesday. Stathis said the device consisted of five large propane gas canisters that had been emptied and then filled with explosives. A guard at the offices called police after seeing the car being abandoned there. The device was destroyed shortly before 7 a.m.. The attempted bombing came hours after gunmen fired shots and threw a suspected bomb outside a private television station Tuesday night. Nobody was injured but it raised fears that Greek militant groups were expanding their targets.