Two "Afro-Americans"...

Police have detained two American men as part of an investigation into the strangling death of an Irish exchange student in Tokyo, Japanese authorities said Sunday.

Nicola Furlong, 21, was found dead in a hotel room with one of the men, according to Tokyo police.
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Sources :
http://us.cnn.com/2012/05/27/world/asia/japan-americans-arrested/index.html
http://www.independent.ie/national-news/mystery-as-irish-exchange-student-nicola-furlong-found-dead-in-tokyo-hotel-room-3118525.html
http://www.japanprobe.com/2012/05/26/irish-woman-found-dead-in-tokyo-hotel-room-two-americans-arrested/