A strong earthquake measuring a magnitude of 6.5 on the open-ended Richter scale struck the Peloponnese region of Greece on Sunday (today), the National Observatory of Athens said. There were no immediate reports of casualties, but emergency services in Achaea prefecture, in the north of the Peloponnese, reported some minor damage to old houses in the port city of Patras and in a number of villages. The tremors were nevertheless strong enough to send people rushing out of their homes and into the streets when they struck around 3:25 pm (0625 PST), NET public television reported.