Video from yourthurrock.com, showing traffic stuck behind a multi-vehicle accident, which has closed the clockwise carriageway near Thurrock. One person has died, and at least four others injured.
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Police arrived at the 73-year-old's home after Alfie chased a delivery man.
Officers believe the three assaults are linked and are appealing for information about the suspect.
Nine addresses in Lewisham were searched and 13 arrests made early on Tuesday morning in a planned, intelligence-led operation.