A strong earthquake with a preliminary magnitude of 5.7 struck off Okinawa's main island on Monday, Kyodo reported quoting the Japan Meteorological Agency. 

No tsunami warning was issued.

The temblor occurred at 2:20 p.m., originating near the southwestern island at a depth of about 40 kilometers.

The earthquake logged lower 5 on the Japanese seismic intensity scale of 7 on Okinoerabu Island in neighboring Kagoshima Prefecture. It registered 4 on Yoron Island in Kagoshima and 2 in Naha, Okinawa's capital.

Source: MENA