Is There a Bomb in the Movie Cliff Hanger?

The explosion was so loud that the mare heard it from his bed. The cops drew revolvers and they started firing. Six more cops were killed. All of them were killed by other copssri support andsos,. Some of the anarchists were armed, right? They might have even shot back. But all the forensic evidence is like really strongly on the side that probably all of the copse were killed by all the other cops who were over reacting.