http://www.theguardian.com/technology/2014/oct/23/british-serial-entrepreneur-missing-bitcoin-apparently-stolen
Almost $1.5m of bitcoins formerly held by cryptocurrency exchange Moolah have gone missing, after the exchange declared bankruptcy. The cash is believed to be in the personal wallet of the company’s founder and chief executive, Alex Green, who has not been heard from since Moolah went bust.
This story is similar to Mt Gox unless he was kidnapped. If people are in control of your money they are tempted to take a run with it, be it exchanges or banks. To own a wallet is the only way to be in control of your money. Why does the phrase contain "believe to be in the personal wallet" ? We do not need the word "believe", if we know the address we can simply look in the blockchain.