British police said on Tuesday they were dealing with a security incident at London's St Thomas' Hospital, with the nearby Westminster Bridge leading to parliament closed to traffic.
Police said they would provide more information when known.
Witnesses reported on social media that there were armed police present and that the hospital was not allowing people to enter or leave.
There was no immediate comment from the hospital.
Israel warns Lebanon of 'heavy price' as week's death toll nears 300
Israel has warned Lebanon of a "very heavy price" if it did not rein in Hezbollah on Saturday, as it pounded the group's strongholds around the country with air strikes and mounted a deadly airborne raid in the east.
Trump rejects settling war with Iran
US President Donald Trump on Saturday has raised the possibility of the war against Iran ending only once that country no longer has a functioning military or any remaining leadership in power.
Qatar intercepts 6 ballistic missiles, 2 cruise missiles
Qatar's Ministry of Defence has announced its interception of 6 ballistic missiles and 2 cruise missiles on Saturday.
Trump tells Britain he does not need its help to win Iran war
President Donald Trump has said on Saturday that Britain is giving "serious thought" to sending two aircraft carriers to the Middle East, but added that the US does not need them to win the war with Iran, in the latest clash between the military allies.
Israeli settler fatally shoots Palestinian in West Bank
An Israeli settler has shot dead a 27-year-old Palestinian man in the occupied West Bank on Saturday, the Palestinian Health Ministry said.
Dubai authorities have confirmed that debris from an aerial interception fell onto a vehicle in the Al Barsha area, resulting in the death of a driver.
The UAE's Ministry of Defence has announced on Saturday night that it is currently responding to missile and drone threats.
President His Highness Sheikh Mohamed bin Zayed Al Nahyan said the UAE will "emerge stronger than before", affirming that the safety and security of citizens, residents, and visitors remain a top priority.
