LAS VEGAS -- Zab Judah will have to go before Nevada boxing regulators next week to explain his conduct after losing to Kostya Tszyu if he wants to claim his $885,000 paycheck.

Marc Ratner, executive director of the Nevada State Athletic Commission, said Tuesday he wants a hearing within a week to decide on possible action against Judah.

Ratner authorized the state attorney general to draft a complaint against Judah for trying to go after referee Jay Nady and throwing a stool in the ring after being stopped by Tszyu in the second round Saturday night.

Judah put his glove to the chin of Nady and had to be restrained on several occasions from going after the referee. Judah was infuriated that Nady stopped the fight after he was knocked down with one second left in the second round.

Ratner said he wants to hold a hearing next Tuesday before the athletic commission, which can suspend Judah's boxing license and fine him.

"I would like to do it immediately," Ratner said.

The commission has the authority to fine Judah his entire purse, but that isn't likely. Ratner said he had an $885,000 check to give to Judah after the fight, but withheld it pending the hearing.

Judah said later he was sorry for his actions in the 140-pound title unification fight, which was won by Tszyu with one second left in the second round. Judah went down from a right hand, then got up and went sprawling to the canvas again, prompting Nady to stop the bout.

Judah's camp said they would protest Nady's action in stopping the fight, claiming the fighter should have been allowed to continue since the round was over.

Ratner said no protest had been filed and there was no regulation that would uphold the protest.

Tszyu said in his adopted country of Australia that Judah should receive some punishment.

"I don't want him to go to jail, of course, but he has to be punished money-wise or stripped from the ratings," Tszyu said.

Meanwhile, the WBC said it supported Nady's call to stop the fight, and congratulated the referee for his action. But the organization also agreed to hear a protest about the round being over at its convention next month in Thailand.

"The WBC is disappointed at the aggressive way in which Judah acted following the fight, but realizes it was probably because he was still affected by the concussion," WBC president Jose Sulaiman said.