Rio de Janeiro, Sep 15 (AP) Police experts say a blaze that killed 11 people in a Rio de Janeiro hospital was triggered by the explosion of a generator in the building's basement.

The preliminary conclusion was reached Saturday despite difficulties accessing the basement of the Badim hospital because of accumulated water and poor visibility. Police officials were still investigating why the generator failed.

The fire began Thursday night and spread through the hospital, forcing staff to wheel patients into the streets on stretchers. Many of the 11 dead were elderly.

Most victims died of asphyxiation as smoke filled the wards, and some died when life support equipment stopped working in the fire.

The hospital is a short walk from Maracana stadium, which was used for World Cup matches and the 2016 Rio Olympics. (AP)

(The above story is verified and authored by Press Trust of India (PTI) staff. PTI, India’s premier news agency, employs more than 400 journalists and 500 stringers to cover almost every district and small town in India.. The views appearing in the above post do not reflect the opinions of LatestLY)