[6ppc]

I believe he had second thoughts and decided to just end it right there on that park bench.

More likely he was in the process of arming the device and it malfunctioned.

[ovrtaxt]

Unfortunately, that aspect of this whole thing may never be known, unless they apprehend any collaborators who know the details. phikapmom's Persian friend saw two dark skinned ME types running into the stadium directly after the explosion.

Accomplices?