Welp. I apologize that pic by David Green clearly shows the man in the back (by the lady in pink) is not the other suspect. The red is 100% part of a jacket he’s wearing, and not the stroller next to him, and he appears to be holding hands with the lady to his left, and looks asian. The pic does capture the suspect with the white cap, though. This bastard planting a bomb near all those little kids.
Correction he’s not holding hands with the lady to his left, he’s with the lady in pink who is also asian. Husband and wife most likely.