A bomb placed beneath a parked car in Athens exploded Tuesday morning near the home of a Greek Cabinet minister. The blast damaged other cars but caused no injuries. Police say they believe the explosion was aimed at Culture Minister George Voulgarakis, who was in charge of security at the Athens Olympics two years ago, when he was the country's public order minister. The bomb went off about 70 meters from Voulgarakis's home. The minister was inside at the time, with his family. No one has claimed responsibility for the explosion.