L’Hay-les-Roses, France ? Firefighters treating survivors at a housing project fire that killed 15 people Sunday were pelted with stones by youths complaining of a tardy response, in what the mayor called a “night of horror.”

Police said it appeared local youths were to blame for the pre-dawn fire in the 19-story project south of Paris – the third deadly blaze in the Paris area in the past nine days. The dead included three children.

Arson was suspected in the two earlier fires as well.

Residents screamed and leaped from windows in the fire that Mayor Patrick Seve said began around 1 a.m. in the town of L’Hay-les-Roses, near Orly airport.

As dozens of firefighters rushed to the scene, youths, apparently angry about what they considered a slow response from rescue teams, threw rocks at them, the mayor said. Rescue squads said they responded in about 15 minutes.

“The firefighters were getting hit by stones while they were conducting heart massages,” he said. Officials said at least five people were revived after suffering heart attacks, and one pregnant woman gave birth after being rescued.

Most of those who died had tried to flee through the entrance hall but were met with 570-degree temperatures, smoke and asphyxiation, the mayor said.

A rescue worker evacuates a woman from the vicinity of a high-rise apartment building in l'Hay-les-Roses, south of Paris, after a fire broke out early Sunday. A fire started by a suspected arson attack ripped through the building, killing 15 people, three of them children, officials said.

“That’s what caused the catastrophic toll” Seve said, calling it “a night of horror.”

The inferno broke out near residents’ mailboxes, swept into the stairwell and raced up at least three floors, damaging several apartments, firefighters said.

“People were screaming and wanted to jump,” said Claude Camps, 48, who fled the building with his wife.

Some 500 residents were in the low-cost housing project at the start of the blaze, and those who stayed in their apartments were not hurt.

Witnesses claimed to have seen a group of youths who lived in the building start the fire, Seve said. Several people were taken in for questioning.

France has been grappling with how to deal with and prevent building fires. The Sunday fire was the fourth deadly fire since April. The government has announced plans for new housing and the eviction of squatters from buildings considered dangerous.