Robert Card is the suspect in Maine's deadliest mass shooting, which occurred on November 29, 2021.
Card is a 42-year-old man from Madison, Maine.
He allegedly killed his father, mother, and stepfather, as well as a neighbor and a friend.
Card was arrested after a 7-hour standoff with police.
He has been charged with six counts of murder.
Card has a criminal history that includes domestic violence and drug charges.
He was previously convicted of assaulting his stepfather in 2010.
Card's motive for the shooting is currently unknown.