(CNN) -- Local and state authorities in Northampton, Massachusetts, are investigating a string of suspicious fires that killed two people and left residents shaken, officials said Sunday.
In just more than an hour early Sunday, five structures -- including a single-family residence -- burned, in addition to "numerous cars," district attorney Betsy Scheibel told a news conference that included fire and police officials and Massachusetts Gov. Deval Patrick.
Two people were found dead on the first floor of the residence, Scheibel said. Identities of the victims are being withheld pending autopsy results.
"We know this community is deeply shaken by this series of suspicious fires," Patrick said. "I want the public to know that every resource at the local [and] at the state level is being applied to deal with this to bring comfort and safety to the community" and to find the individual or individuals responsible.
A joint task force of local, state and federal fire officials has been formed to investigate the circumstances under which the fires started, Scheibel said. All of the blazes have been extinguished.