Agents of the US Federal Bureau of Investigation (FBI) are to make another visit to Guyana to continue their probe.

And sources close to the FBI said the unit is peeved at the unauthorised releasing of the sketch of the suspect last month as this would have compromised the investigation.

The source told this newspaper that the FBI had not been ready for the release of the sketch at the time it ended up in the Kaieteur News, apparently provided by the police force.

Local police were then forced to release to all the media the sketch of the suspect who was seen leaving Thompson's hotel room, 616, at Le Meridien Pegasus.

Police had promised an investigation into the unauthorised release of the sketch. Stabroek News was told by the source yesterday that following the FBI work here in Guyana they were in contact mainly with the Guyana Police Force and the sketch was sent directly to that organization and not the US Embassy.

Since the publishing of the sketch Crime Chief Henry Greene told Stabroek News that there had been no calls or information from the public as to whereabouts of the suspect.

The FBI had also taken back the grainy images of the suspect on the hotel's surveillance cameras. The enhanced images would most likely be available when the FBI arrives.

FBI agents had flown into the country two days following Thompson's murder. They had conducted the autopsy, lifted several DNA samples at the scene and also carried out other tests.

Speaking to Stabroek News yesterday Public Affairs Officer of the US Embassy, Christine Meyer confirmed that the FBI would be returning.

She could not say when they would arrive, but Stabroek News understands that it would be sometime this week.

Meyer said the agents would return to continue their investigation in collaboration with local detectives. Thompson, 55, was murdered on December 10.

Reports were that a man had visited him during the afternoon and later that evening he was heard crying out in agony.

A guard made a check but a man answering the door said everything was fine. The sketch that was developed is of the said man who answered the door.

Thompson died from shock and haemorrhage after being clubbed with a blunt object.

He was here in relation to the construction of warehouses to store HIV/AIDS drugs as part of the USAID Guyana HIV/AIDS Reduction Pro- gramme and was employed by John Snow Inc, a US-based company.