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.
Iran studying deal to halt war as stalemate persists
Iran is reviewing a proposed agreement with the United States to halt the war between the two countries, Iran's Mehr news reported on Tuesday, after US President Donald Trump said talks to reach a deal were continuing.
WHO says suspected Ebola cases drop to 116 after hundreds ruled out
The World Health Organisation said there have been 321 confirmed cases of Ebola in the Democratic Republic of Congo outbreak and 116 suspected cases, marking a large drop in the number of suspected cases as hundreds were ruled out after investigation.
Israel strikes south Lebanon after holding off Beirut attack
Israel kept up strikes on southern Lebanon on Tuesday, pressing its campaign against Hezbollah a day after US President Donald Trump asked Israeli Prime Minister Benjamin Netanyahu not to attack Beirut, averting further escalation in the three-month-old war.
Russian drones, missiles strike Ukraine killing 11, wounding over 100
Russian drones and missiles pounded the Ukrainian capital Kyiv and other cities early on Tuesday, killing at least 11 people and wounding more than 100, authorities said, following days of warnings about Moscow's plans for a major assault.
Two killed in Kenya protest against US Ebola quarantine facility as Ruto defends plan
Two people died in central Kenya during a protest against a planned US Ebola quarantine facility, a protest organiser told Reuters on Tuesday, as President William Ruto rebuffed criticism it will endanger Kenyans.
