Officers say they responded to reports of a van hitting a pedestrians on the bridge in central London.
Armed officers were sent to the scene after witnesses said a white van mount the pavement and drive into people.
The Met said armed officers were also at the nearby Borough Market.
It said "multiple resources" are in attendance.
Downing Street said: "The prime minister is in contact with officials and is being regularly updated on the incident at London Bridge."
Transport for London said the bridge has been closed in both directions due to a "major police incident".
"just realize that our Welfare states are also propped up by your Warfare. You're not actually defending us from threats, but you are propping us up by fabricating threats to maintain the Perpetual War." - Smitty
My sources tell me throats are being slashed...Religion of peace.
"just realize that our Welfare states are also propped up by your Warfare. You're not actually defending us from threats, but you are propping us up by fabricating threats to maintain the Perpetual War." - Smitty
Alexander PhiAlipson wrote:Self defense IS NOT an option.
You don't want for there to be an repercussions against Muslims. That might encourage them to leave and return back to their home countries..
"just realize that our Welfare states are also propped up by your Warfare. You're not actually defending us from threats, but you are propping us up by fabricating threats to maintain the Perpetual War." - Smitty
