Three people were killed and at least one person was hospitalized Wednesday in what's being described by law enforcement as a "mass shooting." The Caswell County Sheriff's office responded to a call just before 8 a.m. Wednesday at a home in Prospect Hill, North Carolina. One person was taken to the hospital with a gunshot wound, WFMY reported. Investigators are collecting evidence and interviewing witnesses to try to determine what happened. Authorities said there is no threat to the general public, and the shooting was contained to the home.