Sumo scandal

Sumo champ Harumafuji investigated over 'bottle assault'

Nine-time grand champion Mongolian wrestler Harumafuji, 33, has apologised for "causing trouble".

The alleged victim, Takanoiwa, was hospitalised for several days, the Japan Sumo Association has said.

Japanese media report the incident occurred during a drinking session.

Sumo association officials told AFP news agency that exactly what happened remains unconfirmed.