Former German AG who was involved in 2011 investigation of Iranian assests, died May, 2nd - heart attack.

2011:

"It speculated that Iranian agents were preparing to attack U.S. airbases in Germany if the United States took part in any kind of attack on Iran, which the West suspects of making nuclear weapons."

Haaretz, 12/01/2011 - Germany Probing Alleged Iran Plot to Attack U.S. Bases on Its Soil

.

.

NYT, 12/01/2011 - West Tightens Iran Sanctions After Embassy Attack