A social media post appears to have set off a deadly confrontation on Detroit’s east side. Fifteen-year-old Robert Harris and his 14-year-old brother went to a gas station to buy snacks when surveillance footage shows another teenager, the same age as Robert, confronting him inside the store. The encounter escalated when the other teen produced a gun; the shooter’s weapon jammed several times but was racked and fired, and Robert was shot and died in his younger brother’s arms.

Robert’s mother says a selfie posted online may have revealed their location to people linked to a prior altercation. The Detroit Police Department identified 16-year-old Mehki Green as a person of interest and, following community tips, a 16-year-old suspect was later arrested in connection with the killing. Authorities warned that anyone who helped hide the suspect could face charges.

Did anyone see or hear about tensions online or in the neighborhood involving Robert in the days before the shooting?