Tauranga Police are investigating an allegation of  sexual assault from a female passenger on board Celebrity Millennium by a crew member.
Detective Sergeant Pete Blackwell said police were investigating a complaint from the passenger that she was indecently assaulted several days ago while the cruise ship was at sea.

Millennium, which had sailed from Fiji, berthed in Tauranga at 5.12am yesterday and was due to sail on to Auckland at 4.15pm last night, before heading back to Sydney at the end of its journey.

Mr Blackwell said the passenger, in her late 40s, alleges she was indecently assaulted while the ship was in the Fiji region.

The woman subsequently alerted the ship's captain and police were then informed, and a team of Tauranga police began their investigation when the ship docked in Tauranga, he said.

Mr Blackwell said detectives were still completing their inquiries and the captain and staff member at the centre of the allegations, and other crew, had been fully co-operating with police during the investigation.