not believed to be connected to terrorism.
Oh, of course not.
But tensions only rose when, three hours after the blast, a second device was found four blocks away — a pressure cooker that an early investigation found was likely also a bomb.
So that's two blasts, and a third bomb, in one day. Couple of months after someone stepped on a 'fireworks experiment' in a park. And pressure cookers, where have we heard that before...