The Japan Boxing Commission on Tuesday questioned representatives of boxer Daiki Kameda about how the fighter retained his IBF super flyweight title despite losing his fight on Dec. 3.

"We only listened to explanations," said JBC secretary general Ken Morita. "Now we will check to see whether what they said is the truth."

After the fight, the IBF announced that Kameda remained champion because WBA super flyweight champ Liborio Solis had failed to make weight — a contradiction of its statement the day before that both titles would become vacant in the event Kameda lost.

At issue for the JBC is how the Kameda camp knew before the bout that their fighter would remain champion whether or not he lost.

The Kameda Gym was represented at the hearing by Chairman Shinji Yoshii, Manager Satoshi Shima and an attorney. The JBC demanded that Kameda Promotions President Koki Kameda, who signed the contract for the fight, attend, but he failed to appear.

"I can't say anything," Shima said. "All we did was explain."

The JBC has asked the IBF to explain what happened, but it appears the world body has yet to answer.