A 10-year-old boy and a 21-year-old female were killed and three others were injured in a shooting in Newark Saturday, the Essex County Prosecutor's Office says.

It happened around 7 p.m. in the 300 block of Chancellor Avenue.

Both victims were pronounced dead at University Hospital. Their identities have not been released.

The three other victims-an 11-year-old boy, a 19-year-old male and a 60-year-old male are in stable condition.

Authorities have not provided information on what led up to the shooting.

Gov. Phil Murphy wrote in a Facebook post Saturday that read:

"I have been updated on a shooting that took place earlier tonight in the South Ward of Newark where preliminary details indicate that multiple victims were shot and killed, including a child. Please pray for the victims and their families."

In a statement, Mayor Ras Baraka described the day as dark and devastating for the city.

"We will not rest until there is justice for the parents and families left behind in unspeakable pain and grief. Newark will work tirelessly with the prosecutor's office, state law-enforcement, and federal agencies to ensure justice is served. We urge the killer to turn himself in, as there is no safe place to hide. There is no explanation on earth that could come close to justifying this shooting. Coming in the midst of the city's historic reduction in violence, this is a vivid reminder that there is so much more work we must do. No one is exempt from doing their part to help and heal one another. Our hearts go out to the victims, their families, and everyone affected by this trauma. Our prayers are with them — and our actions will support them," he said in a statement.

Essex County Sheriff Amir Jones has announced there is a reward of up to $10,000 being offered through the Essex County Crime Stoppers program for information leading to an arrest.

Anyone with information is asked to call 1-877-847-7432.

All calls will remain confidential.