NEW YORK (AP) — All eight people reported missing after the deadly gas explosion in New York City have been found and their bodies identified.

The rescue operation will continue as there are unknown survivors still in the rubble, the city fire commissioner said.

Many of the dead had foreign roots and plans were being made to return some of the bodies to their native lands.

About 60 to 70 percent of debris has been cleared, said New York City Fire Commissioner Salvatore Cassano. He said workers hope to clear all the debris by mid-day Saturday. That’s when detectives and fire marshals will be able to access the basements of the buildings to begin their investigation into what might have caused the blast.

Mayor Bill de Blasio said more than 100 people displaced by the blast will be provided temporary and long-term housing.

More than 60 people were injured after the deafening blast Wednesday morning destroyed two five-story East Harlem apartment buildings at Park Avenue and 116th Street that were served by an 1887 cast-iron gas main.

Investigators were trying to pinpoint the leak and determine whether it had anything to do with the city’s ageing gas and water mains, some from the 1800s.

Fire and utility officials said that if the buildings were plagued in recent days or weeks by strong gas odours, as some tenants contended, they have no evidence anyone reported it before Wednesday.

The blast erupted about 15 minutes after someone from a neighbouring building reported smelling gas, authorities said. The Con Edison utility said it immediately sent workers to check out the report, but they got there too late.

Among the dead were Andreas Panagopoulos, a 43-year-old Greek-born musician who played guitar and key board and worked from their home for an online site that manages a film and photography directory. His wife, Liseth Perez-Almeida, planned to take his body back to Greece for burial.

A Mexican-born woman, 43-year-old Rosaura Barrios Vazquez was also killed, along with her her US-born daughter, 22-year-old Rosaura Hernandez Barrios, who had been making her way up in the restaurant world. Mexican authorities said their bodies would be flown to Mexico City at the government’s expense.

Also killed were Griselde Camacho, 45, a Hunter College security officer, Carmen Tanco, 67, a dental hygienist who took part in church-sponsored medical missions to Africa and the Caribbean; George Ameado, 44, a handyman who lived in one of the buildings that collapsed; and Alexis Salas, 22, a restaurant worker.

Police said body of the eighth person, a woman, was pulled from the rubble Thursday evening.

The working-class neighborhood around the site was once known as Spanish Harlem because of its large population of Puerto Ricans but now has many Asians and other ethnic groups. The neighbourhood is gentrifying but still has a high crime rate, fueled by drugs and gangs.

Robert Sumwalt, a team member from the federal National Transportation Safety Board, said the gas main and distribution pipe under the street had been examined in a crater and were found to be intact, with no obvious punctures or ruptures. They had not been torn from the ground, he said.

However, he said NTSB investigators had been unable to conduct a fuller examination because of the rescue effort underway, and it was unclear whether the leak came from inside or outside the buildings.

He said there had also been a water main break at the site, but it was unknown if that contributed to the gas explosion or was caused by it. The water main was installed in 1897, according to the city.

The NTSB investigates pipeline accidents in addition to transportation disasters.

Ageing infrastructure — crumbling bridges, highways, water mains and gas lines — has become a major concern in recent years, especially in older cities in the North east, and has been blamed for explosions, floods and other accidents.