JAKARTA -- A shallow quake measuring 5.1 on the Richter scale jolted West Java on Monday, the Meteorology and Geophysics Agency reported here.

The quake struck at 07:06 a.m. Jakarta time with epicenter at 233 km southwest Tasikmalaya and with the depth at 10 km, it said.

Indonesia sits on a vulnerable quake-hit zone so called the " Pacific Ring of Fire."