The police are trying to identify dozens of people captured by security cameras at the hotel where Pakistan cricket coach Bob Woolmer was murdered, the lead investigator said on Thursday.
"About 80 unidentified people were filmed on Woolmer's floor during the days he and his team stayed at Kingston's upscale Jamaica Pegasus Hotel," Deputy Police Commissioner Mark Shields said.
Woolmer was found strangled in his room on March 18, a day after his Pakistan squad was upset on their defeat by Ireland in the World Cup.
"The (closed-circuit TV) work has been completed and we're now looking at individuals on those tapes whom we've yet to identify," said Shields, a former Scotland Yard detective heading the probe into the murder.
He did not say how many people police have identified so far.
Police were interviewing witnesses but did not intend to release the images, he said.
Shields said he was confident that Woolmer's killing will be solved even though police have yet to announce any breakthroughs more than six weeks into the probe.
"We have a very positive attitude about this investigation, which, because of its complexity, is still young," he said.
The British Broadcasting Corporation reported this week that a toxicology test detected a drug in Woolmer's system that would have incapacitated him.