The bodies of the three little girls killed in Timaru have been removed from the scene.
Three siblings, twins aged three and another aged seven, were killed at a Queen Street address last night.
NZ Herald crime reporter Anna Leask told Heather Du Plessis Allan it's understood the mother is a suspect and police aren't looking for anyone else.
“She was taken to hospital last night. They haven't discussed with us any charges, it’s just far too early for that, but I think this will be ongoing in terms of the mum and her involvement and what police are looking at.”