I thought the police found it was just two low-level thugs (one of whom had been a tenant in a property owned by the family) who had killed the ME family because they thought there would be money in the house.
There was a Coptic Orthodox cab driver that was was murdered about the same time frame as this family. The murder got on a plane I think to Egypt. Ken might be confusing the two stories. But this family was related to the translator of the Lynn Stewart case during her trial.