AN EXTREMIST group last night threatened visitors to the Greek Olympic Games – adding to security woes just three months out from the start of the event. The warning from the so-called Revolutionary Struggle came hours after makeshift bombs exploded at a local bank in an Athens suburb – and another explosive device was found at a nearby British bank. Devices made from gas canisters exploded at 2am at an ATM owned by Alpha Bank, Greece’s second largest bank and an Olympic sponsor. Another explosive device was found outside the office of the British-owned HSBC bank and defused. The blasts, which caused some damage but no injuries, came eight days after dynamite explosions at a police station in Athens, an incident blamed on local extremists rather than international terror groups like al-Qaeda. Full Story