A moderate quake with magnitude of 5.2 jolted the eastern parts of Indonesia on Saturday, the Meteorology and Geophysics Agency reported here. The quake struck at 13:52 p.m. Jakarta time (0852 GMT), with epicenter at 191 km northwest Saumlaki of Maluku and with the depth at 10 km, the agency said. Indonesia sits on a vulnerable quake-hit zone, the so called \" the Pacific ring of Fire.\"