They say it was a suicide mission but the guards were in a moving vehicle, getting another car close enough and setting off a bomb would be difficult, it seems more likely it was an IED style attack.
The first attack took place at a unity gathering of Shia and Sunni tribal leaders on Sunday morning, in the Pishin area, a region situated in the borderline Province of Sistan-Balouchestan.
At around the same time, another group of IRGC commanders were caught in an explosion as their convoy came under attack at a road junction in Pishin- a region situated between the two towns of Sarbaz and Chabahar.
Reported up to 60 killed now. Looks like diplomacy time is just about over.
The bomb was detonated inside a hall in the middle of a large group of Iranian military, not outside.