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A serious crash has closed the Waikato Expressway.
The one vehicle crash at Tamahere shortly after 7pm has blocked on and off-ramps, police said.
Police said there are reports of serious injuries.
Motorists are asked to avoid using the Cambridge Road (Hillcrest) on and off-ramps, as well as avoiding the Alfred Main Drive off-ramp.
The expressway is expected to be closed for some time, police said.
