Justin John Montpeirous, 21, of Muhlenberg Township near Reading, Pennsylvania, was shot and killed on May 7, 2017. He was the oldest child of Babana Castillo and John Montpeirous, born March 16, 1996 in New York City and a 2015 graduate of Muhlenberg High School. Family members remembered him as helpful, lighthearted, a handyman, and close to relatives and friends.

Police said the shooting occurred on a Sunday in Muhlenberg Township when 26-year-old Mario Morancy of Temple opened fire, killing Justin and critically wounding his brother Jeremy Jason Montpeirous, who was taken to Reading Hospital after surgery. Investigators connected the attack to an earlier assault that had been posted on social media; authorities reported Morancy later surrendered to police and told detectives he fired in a fit of rage. Early charges included first-degree murder, third-degree murder, and aggravated assault.

Justin was buried after funeral services in Reading, survived by his parents, brother Jeremy, and extended family. If anyone knew Justin or has information about the shooting, please come forward.