ITV News has learned that a man convicted over the gas deaths of two children in Corfu has been working at another hotel used by Thomas Cook.
George Chrysikopoulos was found guilty of negligent manslaughter by a Greek court and sentenced to seven years in prison.
Following ITV News' investigation, Chrysikopoulos was sacked by the hotel yesterday at the insistence of Thomas Cook.
Tour operators Thomas Cook "breached their duty of care" over the deaths of two children who died from carbon monoxide poisoning on holiday in Corfu, an inquest has ruled.
Siblings Bobby and Christi Shepherd were found dead in their room by a chambermaid at their resort in 2006 while their parents were found unconscious but survived.
The fumes which killed the six and seven year-olds came from a faulty boiler.
Their mother Sharon Wood cried as the jury at Wakefield Coroner's Court gave their verdict of unlawful killing.
However, as it is an inquest it cannot lead to any prosecutions unless police decide they have enough evidence to proceed.
The boss of Thomas Cook said he is "deeply sorry" over the deaths of two British children killed by carbon monoxide poisoning in Corfu.
Kristine Williams, 61, claims she was electrocuted and 'thrown across the room' after accidentally touching the wires at a hotel in Cuba.