The kittens were taken to the SPCA. Still too young to eat solids, they are being cared for by a nursing female cat and are recovering well. Ms Flis said they will most likely be sent to foster homes next week, and would be ready for adoption in four to five weeks.
"We're really pleased they're doing so well - it's the one nice thing to have come out of this situation," she said.
Ms Flis said she thought kitten dumping was most likely not uncommon in Whanganui.
"What's unusual about this situation is that the kittens are so young, and they were dumped in a public place. It probably happens all the time but we don't hear about it because the kittens die."
Ms Flis urged anyone with information to come forward.
+If you have any information about these kittens, please contact the SPCA on 345 3369.