When Tesla died his entire estate and all his property was seized by the Alien Property Custodian under the orders of the FBI - even though he was a US citizen!
Nikola Tesla was a Serbian American best known for his contribution to the design of the Alternating Current (AC) electricity supply system.
He was an inventor, electrical engineer, mechanical engineer, and futurist. He was very well known as a showman and it earned him the reputation of ‘mad scientist.’
Tesla once proclaimed that he received signals on his receiver while doing experiments in Colorado. He believed it could have come from Mars because they were substantially different from signals that he had previously observed from the noise of storms and the earth.
He was highly criticized when he revealed these ‘findings’.
When Tesla died on 7 January 1943 the FBI ordered the Alien Property Custodian to seize all his belongings even though he was a U.S. citizen. His entire estate was taken to a warehouse under the Office of Alien Property seal.
John G. Trump, a technical aide to the National Defense Research Committee was asked to analyse everything belonging to Tesla in the custody of the Office of Alien Property. After three days of thoroughly investigating everything he released a report that concluded that there was nothing that would be dangerous in unfriendly hands.
In 1952 Tesla's entire estate was shipped to Belgrade in 80 trunks marked N.T.