Trut said there was no information for now about other people possibly trapped.
Eight dogs are on the ground searching for them.
Responders are searching on three locations, cleaning up and organising accommodation and transferring patients from the Petrinja hospital to Zagreb and Topusko as well as people from Sisak to Zagreb.
Trut said machinery would arrive in Petrinja tomorrow. "Everything in the centre that has sustained the biggest damage will probably have to be torn down."