The British Boxing Board of Control wants assurances that Scott Harrison is "medically fit" before it will sanction any title defences.
The WBO featherweight champion, 29, is being held in jail in Spain on charges of theft and assault and has been battling depression and alcoholism.
He is due to defend his crown against Nicky Cook in London on 9 December.
"We have to be sure he is medically fit to continue fighting," said BBCofC secretary Simon Block.
"We need clarification of what Scott Harrison has got himself into and to find out if there are any implications.
"I know little more than has appeared in the press and, as far as I'm concerned, we are not taking any immediate action.
Scott's brought a few things on himself, but I don't think he's the monster people make him out to be
Peter Harrison
"If any licence holder is found guilty of a criminal offence, it is a matter of concern to the Board under regulation 25 - which concerns any fighter bringing boxing into disrepute.
"We have two concerns. First, in respect of his conduct and, secondly, his ability to continue his boxing career."
Harrison is already facing charges relating to six offences, including three of assault and on of fraud, in South Lanarkshire.
On Tuesday, his manager Barry Hughes insisted his charge's fight against European champion Cook was still on.
"This is just a setback of one week," said Hughes. "The fight is on - there's no reason at all why it shouldn't be."
However, the Scot has been warned he could be held in Spain until next year.
But Hughes has protested Harrison's innocence in connection with the alleged theft of a car and an assault on a police officer and insisted he will soon get his preparations for the fight with Cook back on track.
"We are looking to have Scott out on Tuesday or Wednesday," he said.
"We believe he is being unlawfully held. He had no interpreter when he was arrested or at the court.
"He doesn't speak any Spanish and the officer didn't speak any English. This is what led to Scott's arrest."
Harrison's father Peter, who has visited his son in jail, told the Daily Record: "It was the most emotional moment of my life but I was glad I had seen him.
"Scott's a complicated boy. I know he's brought a few things on himself in his time, but I don't think he's the monster people make him out to be."
The Scot's arrest on 6 October comes five months after his decision to pull out of his last fight in Belfast at just two days' notice.
Harrison withdrew from his fight against Gairy St Claire after checking into the Priory clinic with depression and alcoholism issues.
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