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Detling Hill has completely reopened following diesel spill in the morning.
A stretch of the A249 northbound, which runs from Maidstone to Sittingbourne, had been completely closed due to the spillage.
It was enforced between junction 7 of the M20 and Bimbury Lane in Detling but reopened fully at 11.30am.
Kent Highways say there there are no delays.
Police were first called at 6.42am and a spokesman said the spill has happened close to Jade's Crossing.