"Inside the home, troopers found the bodies of four family members: Emily Long (age 34), Ryan Long (age 48), son Parker Long (age 8), and daughter Ryan Long (age 6). A third child, a toddler, was found alive and suffered no physical injuries," New Hampshire Attorney General John Formella said in a statement Tuesday afternoon.

Authorities are investigating the deaths of Ryan and Emily Long, and two of their children, who were found dead Monday inside their home. A third child was unharmed.

Police say they are investigating the shooting deaths of two adults and two children in Madbury, New Hampshire, as an apparent murder-suicide.