Television New Zealand is investigating a claim cleaners used tea towels from a newsroom kitchen to wipe toilets.
Seven Sharp reporter Heather du Plessis-Allan took to Twitter last week claiming cloths used to dry dishes in the network's Wellington kitchen were also used to clean toilets.
Du Plessis-Allan tweeted: "Sprung our office cleaners using one of our tea towels to clean the toilets. Yum. Can't wait to dry my dishes later."
Plessis-Allan declared:"We won't be drinking from the newsroom glasses at ANY stage."
Approached by the Herald on Sunday, du Plessis-Allan declined to comment, saying she was under instructions not to talk to media.