Police in the United States have said they are investigating whether more than one attacker was involved in a gun battle that killed four law enforcement officers in North Carolina.
They died as they tried to serve an arrest warrant for possession of a firearm at a home in Charlotte yesterday evening.
They returned fire and the fugitive was fatally shot in the front yard of the building, according to the Charlotte-Mecklenburg Police Department.
Two women who were inside during the standoff are cooperating with the investigation and officers are not looking at additional persons of interest, police chief Johnny Jennings said.
"We're not ruling out the possibility that someone else was firing as well," he said, adding that the timeline and police body camera footage were being reviewed.
Mr Jennings said investigators recovered a rifle, a handgun and additional ammunition from the home.
Three of the officers who were killed were part of a US Marshals Task Force and the fourth was with the Charlotte-Mecklenburg Police Department, Mr Jennings said.
Four officers were injured in the shooting. One remains in hospital but is expected to make a full recovery. The three others been discharged, he added.
"It's just been very tough, knowing that you have families that are hurting right now," Mr Jennings said.
North Carolina Governor Roy Cooper said he had met one of the wounded officers and families of those killed.
"The investigation into this tragic, brutal, deadly attack will result in more answers that we don't know today, and I expect it to find those answers and bring to justice people for these needless deaths of these brave officers," he said.
In response to the shooting, US President Joe Biden called for additional action to combat gun violence in the United States.
"Leaders in Congress need to step up so that we ban assault weapons and high-capacity magazines, require safe storage of guns, and pass universal background checks and a national red flag law," he said in a statement.
