UPDATE/DEVELOPING – Four people, including a London police officer who was stabbed and the alleged assailant, were killed after a terror attack that saw more than 20 people injured outside the Parliament building on Wednesday.
A Scotland Yard commander told reporters they believe there was only one attacker. Among the injured were three police officers.
Police said a vehicle mowed down pedestrians on London's Westminster Bridge, leaving more than a dozen with injuries described as catastrophic.
Around the same time Wednesday, a knife-wielding attacker stabbed a police officer and was shot on the grounds outside Britain's Parliament, sending the compound into lockdown.
There was no immediate claim of responsibility and it was not clear if there was more than one attacker.
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DEVELOPING(via Fox News) – Two people have died after a terror incident that saw a police officer stabbed and as many as a dozen people run over outside London's Parliament building on Wednesday.
London police confirmed there are a "number of casualties, including police offices."
Scotland Yard Commander BJ Harrington told reporters there are multiple injuries, including police officers, but said authorities "cannot confirm numbers or the nature of these injuries."
"We received a number of different reports which included a person in the river, a car in collision with pedestrians and aman armed with a knife," he added.
He said a full counter-terrorism investigation is underway.
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