Donald Trump has called for every Afghan national who entered the US under the Biden administration to be investigated following the shooting of two National Guard troops near the White House.
The president said the "monstrous, ambush-style attack" was carried out by an Afghan national who arrived in September 2021 during America's chaotic withdrawal from Kabul.
"This attack underscores the single greatest national security threat facing our nation," Mr Trump said in an address to the nation from Florida.
He vowed to "reexamine every single alien" who has entered the US from Afghanistan under the previous government, and said: "I am determined to ensure the animal who perpetrated this atrocity will pay the steepest possible price."
America's citizenship and immigration office said it had stopped processing all immigration requests relating to Afghan nationals indefinitely.
Suspect to face terror probe
Sky's US partner network, NBC News, reports the suspect in custody is 29-year-old Rahmanullah Lakanwal.
Both guardsmen were shot in the head, according to NBC, citing senior officials briefed on the investigation.
Wednesday's shooting - carried out with a handgun - will be investigated by the FBI as a possible act of terror.
The White House was placed into lockdown following the incident, while Mr Trump is away for Thanksgiving.
Victims in 'critical condition'
West Virginia's governor initially said both victims were members of his state's National Guard and had died from their injuries - but later posted to say there were "conflicting reports about the condition of our two Guard members".
Patrick Morrisey had said: "These brave West Virginians lost their lives in the service of their country."
Hundreds of National Guard members have been patrolling the capital after Mr Trump issued an emergency order in August, which federalised the local police force and sent in the guard from eight states and the District of Columbia.
Mr Trump has announced an extra 500 troops will be deployed in the wake of Wednesday's shooting.
FBI director Kash Patel said the troops were "brazenly attacked in a horrendous act of violence".
At a news conference, he clarified they were in a "critical condition".
Former president Joe Biden, who was heavily criticised by Mr Trump in his address, said he and his wife Jill were "heartbroken" by the shooting.
"Violence of any kind is unacceptable, and we must all stand united against it," said a statement.
How the attack unfolded
Jeff Carroll, chief of the metropolitan police department in the area, said the attack began at 2.15pm local time (7.15pm in the UK) while National Guard members were on "high visibility patrols in the area".
He said: "A suspect came around the corner, raised his arm with a firearm and discharged it at the National Guard.
"The National Guard members were... able to - after some back and forth - able to subdue the individual and bring them into custody."
Washington DC mayor Muriel Bowser called the attack a "targeted shooting".
Social media footage showed first responders attempting CPR on one of the soldiers as they treated the other on a pavement covered in glass.
Nearby other officers could be seen restraining an individual on the ground.
The scene was cordoned off by police tape, while agents from the US Secret Service and Bureau of Alcohol, Tobacco, Firearms and Explosives attended the scene, as National Guard troops stood sentry nearby.
The FBI was also on the scene, the agency's director said.
(c) Sky News 2025: Washington DC shooting: Trump condemns 'monstrous' attack near White House - and says suspect is Afghan national

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