The Japanese Olympic Committee said Tuesday it has debriefed at least 11 of the 15 female judo wrestlers who lodged a joint complaint accusing their former coach of physical and verbal violence.

JOC executive member Yosuke Fujiwara said the interviews of the women, which have taken some 17 hours, have delved into the specific types of violence that occurred. The JOC's investigation is scheduled to conclude on March 12 after the accused, former coach Ryuji Sonoda, and other judo coaches involved are questioned.

"We have looked into keys points like the concrete facts involving violence, when, where and who it was against," Fujiwara said at a news conference. "We have been splitting them into groups of two or three people, and multiple members have carried out the questioning."