A New Hampshire mother shot and killed two of her children and her husband, who had reportedly been diagnosed with brain cancer, before killing herself, authorities said.

"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.