In the early evening of a Wednesday in September 2024, 24-year-old Mario Olivera sat on the front porch of his mother’s home in Philadelphia’s Kensington neighborhood holding his one-year-old son. Two people on a scooter rode up, opened fire and struck Olivera multiple times in the head and thigh; he was taken to Temple University Hospital and pronounced dead shortly after arrival. His infant son suffered only graze wounds and was treated in stable condition.

Witnesses reported the shooters had been seen circling the block before the attack and then fled the scene on the scooter. Olivera’s family says he had been working to rebuild his life after a prior drug-related incarceration, training as a mechanic and employed at an auto body shop; he was a husband and father of three. The motive remains unclear, no arrests have been announced, and the Philadelphia Police Department is offering a $20,000 reward for information leading to arrest and conviction.

If anyone saw the scooter or the suspects that evening, or knew Mario’s movements in the hours before the shooting, please share what you know with investigators.