Congo arrest over missing uranium :
Enriched uranium is used for nuclear power generation and weapons
The Democratic Republic of Congo's top atomic energy official is being held over allegations of uranium smuggling.
Atomic energy centre director Fortunat Lumu and an aide have been questioned since their arrest on Tuesday.
A large quantity of uranium is reported to have gone missing in recent years, although state prosecutor Tshimanga Mukeba did not reveal any figures.
He told the BBC an "important quantity" of uranium was taken from the nuclear centre and they were investigating.
DR Congo's daily newspaper Le Phare reported that more than 100 bars of uranium as well as an unknown quantity of uranium contained in helmet-shaped cases, had disappeared from the nuclear centre in Kinshasa as part of a vast trafficking of the material going back years.
But the BBC's Kinshasa correspondent, Arnaud Zajtman, says that as of yet, no evidence has been made public to support the allegations made by the newspaper.
Creation of centre
A mine in Congo's southern province of Katanga supplied the uranium that was used in the atomic bombs that were dropped by the Americans on the Japanese town of Hiroshima in 1945.
To thank and reward Congo, the Americans funded the creation of Congo's nuclear centre in 1958.
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