Three servants were later executed for his murder. But in an interview years later with the BBC, King Bhumibol said the death remained a mystery.
ely many of the evidence was just shifted ... everyone was political. Even the police were political."
The then Prince Bhumibol was at the palace at the time.
"When I arrived he was dead," he said.
"Many people wanted to advance, not theories, but facts to clear up the affair. They were suppressed. And they were suppressed by influential people in this country, or in international politics."
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King Bhumibol took the throne in June 1946, but returned to Switzerland to finish his studies.