Police have extended the exclusion zone in New Malden and are expected to carry out a controlled explosion on a suspect package.
Police in hazardous material suits are in the area, and a fleet of ambulances are parked at the Fountain pub.
Traffic chaos has ensued, flats have been evacuated and many mothers have been unable to pick their children up from school.
The exclusion zone has been extended to take in the Fountain pub, down to the disused petrol station in Kingston Road.
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