Nine people have been killed and at least 16 injured in a mass shooting in Dayton, Ohio, police have confirmed.First reports came in at about 01:00 local time (05:00 GMT) of a shooting outside a bar in the Oregon district of the city.Police confirmed they killed the shooter at the scene. Casualties have been taken to a number of hospitals.The incident came only hours after a mass shooting in El Paso, Texas which left at least 20 people dead."We had officers in the immediate vicinity when this shooting began and were able to respond and put an end to it quickly," Dayton Police Department wrote in a tweet. The authorities have appealed for witnesses.One witness described seeing a 'white man in all black' firing a machine gun at a bar in Dayton, OhioAssistant Police Chief Matt Carper told reporters that officers on patrol managed to take down the shooter."Our people are very well trained for a situation like this," he said, adding it was "very fortunate that the officers were in close proximity".Nothing is yet known about him, but Officer Carper said they were "anxious to discover" a motivation.

What happened in Dayton?

Footage posted on social media showed people running as dozens of gunshots echoed through the streets.It is thought the shooting took place outside Ned Peppers Bar on E 5th Street. A note saying staff members were safe appeared on Ned Peppers Instagram pageand on the nearby Hole in the Wall bar's Facebook page.Jae Williams told the BBC he was at a nearby rap performance when they were told to evacuate.Bodies of the victims being removed from at the scene of a mass shooting in Dayton, Ohio"I was very shocked," he said. "We all evacuated quickly and safely. We were told to avoid the Oregon district.""I got to my car, I could see cops, multiple ambulances. When I drove past I saw a lot of cops and ambulances."Emergency services gathered at the corner of E 5th Street and Wayne Avenue in the wake of the shooting.FBI agents are also at the scene to help in the investigation.

What's been the reaction?

Mayor Nan Whaley said she was "heartbroken" after the shooting, and thanked first responders.The Dayton mass shooting came within hours of the incident in the border city of El Paso. Twenty were killed there and 26 others injured.It also took place less than a week after three people were killed and 15 injured at a food festival in California.