Following yesterday's fatal crash on State Highway 4, police would like to hear from anyone who may have witnessed unusual driving behaviour around the time of the crash.

The crash occurred at 9.45am just south of Raetihi.

Anyone who travelled between Whanganui and Raetihi between 8.30am and the time of the crash and may have seen something unusual is asked to call Ohakune Police Station, 06 385 0100.