Is his cellphone, computer or laptop missing?
Did the ChiComs get to his personal affects before the Israelis did?
NO doubt his cellphone and computer will contain incriminating data. Check his trash. DNA swab his residence. A treasure trove awaits unless it's all been REMOVED by the ChiComs.
Where do people come up with stuff like this? Unless he was at the scene of a crime, all of his effects would be covered by any number of diplomatic immunity protections from treaties. There would be no way that any of his things would be "missing", unless the Israelis had them.