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.

Ryan Long, 48, Emily Long, 34, their son Parker, 8, and daughter Ryan, 6, were found dead in a murder-suicide.

In the heart of small-town America, where neighbors wave from porches and communities rally around those in need, a devastating tragedy has shaken the quiet town of Madbury, New Hampshire. The Long family—Ryan,