An earthquake measuring 5.6 on Ricther scale jolted eastern parts of Indonesia earlier Saturday, the Meteorology and Geophysics Agency reported. The quake struck at 06:50 a.m Jakarta time Saturday (2350 GMT Friday) with an epicenter 185 km northeast of Ambon, the capital of Maluku province, and with an depth of 25 km, the agency said. Indonesia lies on a quake-prone zone called \"the Pacific Ring of Fire.\" But there have been no reports of casualties or property damage so far.