A manhunt is underway for a potential suspect or suspects in the mass shooting that killed a 10-year-old boy and a 21-year-old woman and wounded three, including another child, in New Jersey’s largest city over the weekend.

A 4-year-old boy has serious injuries after accidentally shooting himself Monday morning, the second little boy injured this month in Durham while handling an unsecured gun, police said. Officers responded to the shooting on 1600 block of Greenbriar Road shortly before 7:30 a.m., according to a news release.

An 11-year-old Nevada boy has died following a road rage incident that took place while he was being driven to school. Police say that Tyler Matthew Johns, 22, has been charged with open murder and discharging a weapon into an occupied vehicle following the incident.

The police said that the suspect, Tyler Matthew Johns, 22, and the boy’s stepfather got into a dispute as they tried to pass each other in heavy traffic.