Two US journalists have been shot dead during a live TV report in the state of Virginia, their employer has confirmed.
WDBJ7 TV reporter Alison Parker, 24, and cameraman Adam Ward, 27, were killed during an interview in Moneta, Bedford County, the TV station said.
During the live broadcast, shots and the reporter's screams could be heard, and the camera fell to the ground.
Police say they are investigating the incident and still searching for the suspect.
Live updates on manhunt for gunman
State police have denied reports that a pursuit is under way.
Virginia Governor Terry McAuliffe said in a statement: "We believe it was a disgruntled employee who fired at the TV crew. Not a case of terrorism. It is a criminal case.
The attack took place at a large shopping centre, Bridgewater Plaza, near Smith Mountain Lake.
Ms Parker was starting an interview about tourism at the shopping centre when suddenly eight shots rang out, the camera spun and dropped to the ground, and her screams could be heard.
The footage then captures what appears to be a fleeting image of the gunman, who is wearing black trousers and a blue top - and holding a handgun.
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WDBJ-TV general manager Jeffrey A. Marks called shooting ``a terrible crime against two fine journalists.''
The station said the woman who was being interviewed had survived the attack but was in hospital and required surgery.
"Alison and Adam died this morning at 06:45 shortly after the shots rang out. We do not know the motive or who the suspect or the killer is," the station's president and general manager, Jeffrey Marks, announced on air.
"I cannot tell you how much they were loved by the WDBJ7 team... our hearts are broken," he said.
He added that the station's building was in lockdown, under police protection.
"Police have advised us that as long as this person is on the loose, we should stay in the building. We have police protection," he told the Associated Press news agency.
WDBJ7 anchor Chris Hurst revealed that he and Ms Parker had been in a relationship and had planned to marry.