Tokyo, March 14 - A quake measuring 6.1 on the Richter scale jolted southwest Japan early Friday, the country's meteorological agency said.

The temblor, which struck at around 2:07 a. m., had a depth of 80km, Xinhua reported.

Meanwhile, no tsunami warnings were issued. Also, there was no immediate report of damage to property or any casualty. (IANS)