Police officers in the Turkish province of Bolu found 18 grams of californium radioactive substance used in the production of nuclear warheads in a car, according to a statement by the local administration.

Police officers stopped a car in the province of Bolu, near the Atatürk Forest Park.

“During the search, 18.1 grams of californium, which is used in nuclear warheads and nuclear power plants, were seized. This substance, valued at $72 million, requires special authorisation to import, transport and store research,” the administration said in a statement.