US federal law enforcement officials begin news conference
We're now hearing from federal law enforcement officials at a news conference.
First to speak is Border Patrol Commander Greg Bovino.
We'll bring you the key lines here, but you can also follow along by pressing
Watch live at the top of this page.
Border Patrol agent fired 'defensive shots', commander says
We're now hearing from Greg Bovino, Border Patrol commander.
He tells the press that this morning, an individual approached ICE agents with a 9mm semi-automatic handgun. The agents "attempted to disarm the individual but he violently resisted".
"Fearing for his life... a Border Patrol agent fired defensive shots," Bovino continues.
Medical aid was given straight away but the man was pronounced dead at the scene, he says.
The man had two loaded magazines and no accessible ID, he adds.
"This looks like a situation where an individual wanted to do maximum damage and massacre law enforcement," he says.
Officer involved in shooting 'highly trained', Bovino says
Bovino says the Border Patrol officer involved in the shooting today was "highly trained".
He does not give any details about the identity of the agent.
The shooting comes after days of protests in the city over the Trump administration's immigration enforcement operation there.
www.bbc.co.uk