New Zealand's national museum will be closed again on Friday after sprinklers drenched two floors on Wednesday night.
Te Papa was shut on Thursday as a team looked into what set the sprinklers off, started the clean-up and examined the museum's systems - and that process will be continuing into Friday.
The sprinklers went off at about 8pm on Wednesday night, saturating the ground floor and first floor - though there was no fire and no people or exhibits harmed during the incident.
Museum spokesperson Kate Camp said Te Papa regrets the inconvenience it has caused.
"We understand it's a real pain for those who planned a trip to Te Papa, and we're sorry for the inconvenience," she said.
"Te Papa is taking a precautionary approach - the safety of people and our collections is paramount."
Ms Camp said the museum had to be "completely satisfied" that everything was "as it should be" before reopening - hence the extra day spent closed.
"We really appreciate everyone's patience as we try to get Te Papa back up and running as quickly as possible," she said.
People planning on visiting the museum on the weekend have been advised to keep an eye on Te Papa's social media accounts for updates.