Police were releasing few details Sunday morning, including what caused the death of David Wheelock, 48.
Police responded to a medical assistance call at about 9:30 p.m. Saturday. They found Wheelock dead inside.
Attorney General Joseph. Foster, Keene Police Chief Kenneth Meola and New Hampshire State Police Colonel Robert Quinn announced investigation in a joint release that also asked for the public's help in the investigation.
According to the release, the cause and manner of death will be determined during an autopsy scheduled for Monday.