A moderate quake measuring 5.2 on Richter scale struck off eastern parts of Indonesia on Wednesday, the Meteorology and Geophysics Agency reported here. The quake jolted at 11:40 a.m. Jakarta time (0440 GMTO) with epicenter 118 km southwest Tual of Maluku province and with the depth 10 km, the agency said. Indonesia sits on a quake-prone zone called \"the Pacific Ring of Fire.\"