Hamilton police are appealing for any witnesses to an attack on a local woman Tuesday evening.

A 23-year-old man has been arrested and will be appearing in court today to face several sexual assault charges in relation to the attack.

However police say the investigation is far from complete.

They're looking for anyone who may have spotted either the woman, running from Mahana Rd, Te Rapa, on Tuesday evening, or a light-skinned solidly-built Polynesian or Maori man.