What to know after U.S. Marine arrested for murder in Japan

What happened: Okinawa police arrested U.S. Marine Lance Cpl. Devin Jacob Ballard, 20, stationed at Futenma Air Station, on suspicion of strangling Anna Yagi, 39, at a Naha hotel and stealing her wallet and backpack. He has denied the allegations. Key numbers: Yagi was 39, Ballard 20. U.S. Why it matters: The case has sparked widespread anger in Okinawa and renewed controversy over the U.S. military presence and the 1960 Status of Forces Agreement. Prosecutors began examining the case Monday; if convicted, Ballard could face life in prison or the death penalty.

Okinawa police arrested U.S. Marine Lance Cpl. Devin Jacob Ballard, 20, stationed at Futenma Air Station, on suspicion of strangling Anna Yagi, 39, at a Naha hotel and stealing her wallet and backpack. He has denied the allegations.

The case has sparked widespread anger in Okinawa and renewed controversy over the U.S. military presence and the 1960 Status of Forces Agreement. Prosecutors began examining the case Monday; if convicted, Ballard could face life in prison or the death penalty.