A Tanzanian billionaire industrialist who was abducted about nine days ago has returned home unharmed, his charitable foundation said. Mohammed Dewji, listed by Forbes as Africa\u2019s youngest billionaire with a net worth of $1.5 billion, thanked Tanzanian authorities for his safe return, the Mo Dewji Foundation said early Saturday on Twitter. It gave no further details on his kidnapping or release. The Daily News, a local newspaper, said his family confirmed his release. The 43-year-old was seized by unidentified people in the Tanzanian commercial hub of Dar es Salaam on Oct. 11. Dewji owns MeTL Group, a conglomerate operating in several African countries and contributing about 3.5 percent to Tanzania\u2019s gross domestic product, according to its website.