Historian Rod Beattie believes Bowden Endacott, a Met police officer who would have been patrolling the streets of London s Whitechapel, was responsible for the notorious murders.
A forensic exam carried out on human remains found in the Amazon rainforest confirmed on Friday that they belonged to British journalist Dom Phillips, Brazil`s federal police said, adding that a search was underway for a man suspected of involvement in his killing.
Work is proceeding to determine the cause of death, police said in a statement.
The remains of a second person, believed to be that of indigenous expert Bruno Pereira, were still under analysis, a report by CNN Brasil said earlier on Friday.