GREENLAND, N.H. (AP) -- New Hampshire State Police are investigating whether an April shootout that killed a police chief and wounded four officers was recorded on video.

Investigators found four video cameras installed on the front porch of the Greenland home where Cullen Mutrie shot the officers.

Foster's Daily Democrat reports court documents say those cameras were connected to a power cable, but were not hard-wired to a video receiver. Police are investigating whether the cameras were transmitting video wirelessly to a computer inside the home, and whether any recordings were saved.

Police seized four computers from the home.

Police said Mutrie fatally shot Greenland Police Chief Michael Maloney and wounded four officers as they attempted to execute a search warrant.

Mutrie later killed himself and a female companion.