Port-au-Prince  - The number of children killed the collapse of a school in the Haitian capital Port-au-Prince rose to 90 late Sunday, rescuers said, as police arrested the school's owner.

There were still many victims buried under the rubble of the Evangelical Promise school in the city's Petion-Ville suburb, that collapsed Friday morning with up to 700 children inside, rescuers said.

The school's owner-operator was arrested, as angry locals and parents gathered around the school as bodies were recovered from the three-story building. He is accused of having built and extended the building without obtaining the proper permits.

"Our cameras have detected several bodies under the rubble," a member of a Haitian rescue team was quoted as saying by the local Haiti Press agency.

"But we cannot recover them because of the heavy rubble."

Three days after the catastrophe the number of victims still buried could not determined. About 150 injured children were brought to nearby hospitals. Reports on how many children and teachers had been in the building vary between 500 and 700. (dpa)