At least five people have been shot dead, including an off-duty police officer after a mass shooting on a nature trail in North Carolina's capital on Thursday evening. A 15-year-old was arrested.
Local police said that the unnamed 15-year-old white male suspect was taken into custody with life-threatening injuries.
According to NBC News, the US Department of Homeland Security supplied a memo saying: "It is unknown if the suspect's injuries are self-inflicted."
Raleigh Police Chief Estella Patterson offered no details on how the teenage suspect was injured but confirmed that he was still in the hospital in a critical condition on Friday morning.
Patterson said at a press conference: "My heart is heavy because we don't have answers as to why this tragedy occurred.
"But what I can tell you is that the Raleigh Police Department and the Raleigh community are resilient and we stand strong and we will heal."
The fatal shooting occurred in the vicinity of the Neuse River Greenway Trail, near Osprey Cove and Bay Harbor drives in Raleigh. The full crime scene covers an area of over 2 miles.
The teenage suspect allegedly first shot two people in the streets of the local neighbourhood before fleeing towards the nature trail, where he opened fire again and killed a further three people and wounded two others.
29-year-old Raleigh Police Officer Gabriel Torres was shot and killed as he was on his way to work.
The police chief added: "This is an extremely, extremely painful event for our officers and me. I was immediately taken aback, shocked by what occurred."
The four other victims who were killed in the attack have been named as Susan Karnatz, 49, Nicole Conners, 52, Mary Marshall, 35, and James Roger Thompson, 16.
Police have not said if the victims had any connection to the suspect.
Mary-Ann Baldwin, Raleigh Mayor, said: "There are several families in our community waking up this morning without their loved ones.
"No one can imagine what they're all going through."