A report on the UN detention centre where Slobodan Milosevic died has highlighted monitoring difficulties at the unit.
Slobodan Milosevic died at the detention unit in March
The investigation, conducted by an independent Swedish panel, praised staff and procedures at the facility.
But it noted problems monitoring visitors to the former Yugoslav leader, who was conducting his own defence.
The probe was ordered after Milosevic, on trial for war crimes, was found dead in his cell in The Hague on 11 March.
The report, posted on the tribunal's website, said that regulations at the facility were "complete and comprehensive," and stated there was no sign that staff failed to follow applicable rules.
But the document, which did not mention Milosevic by name, said that the practise of granting a detainee the right to conduct his own defence without consulting the detention unit should be reviewed.
Milosevic, who was the only detainee to defend himself, was given a private office where he could meet lawyers and witnesses. He also had his own telephone and computer.
"The consequences of this special arrangement were that it became difficult to maintain sufficient control over visits and telephone conversations," the report said.
It also said that entry checks at the unit met "demanding standards," but called for a more general review.
"More consideration should perhaps be given to the fact that many of the detainees at the (detention unit) have both money and trained personnel at their disposal for bids to free detainees," it said.
The report praised medical facilities there, but said that the quality of meals could be improved. It also said there was no indication of "ethnic antagonism" at the facility.
The tribunal said in a statement that it welcomed the report and was committed to "a thorough review of the proposals with a view to undertaking action where appropriate".
Dutch prosecutors concluded in April that Mr Milosevic died from natural causes and there was no foul play involved in his death.
An earlier statement by a Dutch doctor that traces of a drug that could have counteracted medication for his heart condition had been found in Mr Milosevic's blood led to speculation that he had taken the drugs to boost his case for medical treatment in Russia.