Japan Self Defense Force's soldiers load earthquake relief items for those affected by multiple large-scale earthquakes in Kumamoto region onto a U.S. military aircraft MV-22B Osprey aboard the Japan Maritime Self-Defense Force Hyuga-class helicopter destroyer JS Hyuga (DDH 181), off Kyushu region, Japan, April 19, 2016. Capt. Jennifer Giles/U.S. Marine Corps/Handout via Reuters(reuters_tickers)
TOKYO (Reuters) - An earthquake with a preliminary magnitude of 5.5 hit Kumamoto prefecture in southern Japan on Tuesday, broadcaster NHK said.
A tsunami warning had not been issued, NHK added.
Two deadly quakes hit the same region last week, killing 44 and injuring more than 1,000.
(Reporting by Minami Funakoshi; Editing by Chris Gallagher)