more than 140 others were injured. the explosions were about a block apart - and happened within seconds of each other. some victims lost limbs, suffered broken bones, shrapnel wounds and ruptured eardrums. of those hurt, officials say, at least 15 are in critical condition. police have no suspects in custody. however, police are searching an apartment in a boston suburb. in connection to the deadly blasts. officials in washington say, there has been no immediate claim of responsibility but the attack is being treated as an act of terrorism. what s still not clear is whether it is a domestic or foreign act. kron4 s grant lodes takes a closer look at the pair of explosions near the boston maraton finish line. the amount tonight, a dramatic video of the first explosion. tonight, this was filmed by a boston globe a photographer and let me warn you that some of these images are horrific we have had an attack. all my god all my god oh my god. that was the boston globe a photog
tried to get shots of their loved ones crossing the finish line, and they may have inadvertently captured not only either one or both of these explosions but something else that may prove helpful to law enforcement in the coming hours, days and weeks. if you see something, say something, and that s what they re counting on, but the investigation obviously is just beginning here, and so much now. much more ahead on nbc nightly news . bring out the best in others, the ones they seek to harm. right, there s still discussion obviously whether this was international terrorism or domestic terrorism. do you have a feeling on that? i this i this is one of those things you have to wait to play out. often there is a claim of responsibility quickly which we haven t seen yet. that could mean nothing. they say in those bombs they had bebes and ball bearings and i guess they asked one of the terrorism experts. as lester just the fbi special agent in charge they re processing l