Police have cordoned off a road. The attack happened on Bromley High Street after 2pm this afternoon, with Met Police officers, an air ambulance and the London Fire Brigade seen rushing to the incident. Key points and original sources are listed below.

• Police have cordoned off a road.S1

• The attack happened on Bromley High Street after 2pm this afternoon, with Met Police officers, an air ambulance and the London Fire Brigade seen rushing to the incident.S2

• A large cordon is currently in place in the capital with four people said to be being treated in hospitalS3

• London Ambulance Service was called to the scene on Thursday afternoonS4