Two teenagers are likely to face charges after one of their cars struck and killed a motorcyclist, police say.
Asa Le Grande Te Kare, 43, died on Saturday night when his motorcycle was hit by one of two cars racing north on State Highway 1, just south of Warkworth.
Inspector Stu Kearns, of the police serious crash unit, says witnesses saw the cars travelling at considerable speeds before the crash.
Mr Kearns says the cars were travelling round a moderate right-hand bend when one of them slid sideways onto the wrong side of the road and hit the motorcycle.
Police are speaking to witnesses.