Tributes have been paid to Ittai Gradel, who exposed the theft of thousands of treasures from the British Museum, after his death aged 61.
Gradel's discovery of the crime led to the resignation of then-director Hartwig Fischer after it emerged the London museum had ignored the expert's earlier warnings that valuable antiquities were being stolen and sold online.
He tried to persuade the museum to investigate in 2021 but it was only two years later it admitted around 2,000 items from its collection were stolen, missing or damaged.
Awarding him the British Museum medal shortly before his death from cancer, current director Nicholas Cullinan said it was in recognition of his "expertise" and "passionate determination that wrongs should be righted".
BBC culture editor Katie Razzall, who reported his death, said Gradel was a "complete one-off" whose photographic memory helped uncover the extent of the scandal.
A police investigation into the thefts is ongoing.