The Ministry for Primary Industries (MPI) has confirmed 13 pigs have died following an Auckland fire early this morning.
A Fire and Emergency spokesperson said they were alerted just before 1am to the shed fire in Ardmore.
The building was well involved in fire when three trucks from Papakura and Manurewa arrived, they said.
Crews extinguished the fire just after 3am.
MPI said it was working with the piggery owner to ensure any ongoing animal welfare needs were met.
It was still seeking more information about the cause of the fire.
Fire and Emergency was also investigating the cause and origin of the fire, but said that at this stage, it did not appear to be suspicious.
A local vet had visited the site and was providing support.