One person is reportedly in critical condition, and another in moderate to serious condition following a crash in Waikato this morning.

Police were notified of the two-vehicle crash on Te Aroha-Gordon Rd at 11.30am.

"Two people are reportedly injured, one in a moderate to serious condition and one in a critical condition," a spokesperson said.

"The serious crash unit has been advised and inquiries into the circumstances of the crash are ongoing."

The road has closed and diversions are being put in place.

1News has contacted St John for comment.