A tectonic earthquake measuring 5.7 on the Richter scale jolts South Sulawesi on Monday at 09.17 a.m. West Indonesian Standard Time (WIB). "The quake is centered at 82 kilometer southeast of Luwu Timur, South Sulawesi, at the depth of 10 kilometer," ANTARA quoted spokesman to the National Disaster Mitigation Agency (BNPB) Sutopo Purwo Nugroho as saying today. No report on damage or casualties due to the recent quake.