According to the search results, the A12 road near Colchester was closed in both directions due to a police incident that occurred at around 11:15 am on October 10, 2023. The incident was related to welfare concerns for a man, and the road remained closed for several hours, causing long delays and traffic chaos in the area. The closure affected the stretch of the A12 between Junction 25 for Marks Tey and Junction 28 for the Colchester Football Stadium. There were no reports of any accidents or injuries on the A12 itself, although there was a separate hit-and-run incident involving three children in Dagenham that was also reported on Essex Live.