State police say about 15 to 18 residents and town officials were at the Ross Township meeting Monday night when the gunfire erupted.
Authorities say the gunman, 59-year-old Rockne Newell, was tackled to the ground by two people and was shot with his own gun. He was taken to a hospital with a gunshot wound to the leg.
A spokesman for Pocono Medical Center tells the Pocono Record newspaper that Newell and two other people injured in the shooting were released from the hospital late Monday.
Authorities have scheduled a news conference for late Tuesday morning to give updates in the case.
State police are still investigating at the municipal building and are searching Newell's home.