Matthew Hayden, 21, has been charged with shooting his two sisters to death and injuring their friend as they listened to music in a parked minivan in the backyard of their Cincinnati, Ohio, home.
Matthew’s mother has forgiven him, and hopes others will do the same.
"Keep my family in your heart and your prayers. If I can find it in my heart to forgive Matthew, then I want everybody else to and to stop judging him," Angela Hayden said through family spokesperson Jenn Wallace, according to WCPO.
Angela and Matthew’s father, Doug, along with seven children ranging in age from 2 to mid-20s, were home on Oct. 21 during the shooting.
Wallace said that Doug witnessed his son shoot a handgun into the family van where his sisters, 17-year-old Elizabeth and 16-year-old-old Sarah, with their friend, 17-year-old Josh Hacker, were listening to music.
The other family members were in the living room when they heard gunfire outside around 2:30 a.m., according to police.
Angela called 911 and reported that Matthew had shot the girls and Hacker.
“There's only one of them alive! My girls are dead! Oh, please help! My girls are dead!” Angela told the 911 operator, The Daily Mail reports. “Oh my god, my son shot them!”
Matthew surrendered to police when they arrived at the home with the gun tucked into the waistband of his pants.
“I guess I'm the guy you want,” he allegedly said before surrendering.
A motive behind the shooting has not been provided by Matthew to his family or the police but a family dispute between him and the victims may be to blame.
Elizabeth and Sarah died at the scene. Hacker is said to have suffered life-threatening injuries and remains hospitalized.
The 9mm handgun Matthew used in the shooting was unregistered, according to police. He reportedly fired all 15 rounds in the magazine, then reloaded and continued firing. He fired almost two dozen bullets into the van.
Matthew faces charges of two counts of murder and one count of attempted murder.