An earthquake with the magnitude of 5.0 struck off Sulawesi island of Indonesia on Thursday, the Meteorology and Geophysics Agency reported here. The quake jolted at 16:25 p.m. Jakarta time (0929 GMT) with epicenter at 55 km northeast Tahuna of North Sulawesi and with the depth at 95 km, the agency said. Indonesia sits on a vulnerable quake-hit zone the so called \" the Pacific Ring of Fire.\"