Two men in their 20s were wounded Sunday night as they walked along a street and were hospitalized in stable condition. The three earlier bombings since March 2 left two people dead and two wounded.
“We are clearly dealing with what we believe to be a serial bomber at this point, based on the similarities between now what is the fourth device” and the previous ones, Police Chief Brian Manley said.
He said the blast involved a tripwire, unlike the first three attacks, in which package bombs were left on people’s doorsteps. That represents a “significant change,” in that the previous bombings appeared targeted, while the latest one would have hurt any random person walking by, Manley said.