A magnitude-5.1 quake jolted the Greek holiday island of Zakynthos early Monday, causing no serious damage or injury, authorities said. The University of Thessaloniki's Geophysics Department said the undersea quake occurred at 4:34 a.m. (0134GMT), with the epicenter 23 kilometers (14 miles) off the coast of the island. The Ionian Sea island is in a seismically active area.
