A nursing home building smolders after fire in which at least ten elderly persons died, in Chiguayante, Chile, Tuesday, Aug. 14, 2018. At least Ten elderly persons died in the voracious fire that destroyed the bedroom in which they rested, informed the governor of Bío Bio, Jorge Ulloa. (Alejandro Zonez/Aton Chile via AP)

A nursing home building smolders after fire in which at least ten elderly persons died, in Chiguayante, Chile, Tuesday, Aug. 14, 2018. At least Ten elderly persons died in the voracious fire that destroyed the bedroom in which they rested, informed the governor of Bío Bio, Jorge Ulloa. (Alejandro Zonez/Aton Chile via AP)

SANTIAGO, Chile (AP) — A fire swept through a nursing home in southern Chile on Tuesday, killing 10 elderly women, officials said.

Investigators were trying to determine the cause of the fire that broke out at around 3 a.m. in the women’s dormitory at the Santa Marta nursing home in Chiguayante, about 320 miles (520 kilometers) south of the Chilean capital. Only three elderly women were rescued from the burning room. One was hospitalized.

Aerial photos carried by the 24 Horas television station website show the women’s wing burned to the ground, with a few metal bed frames amid the charred ruins.

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“The entire country ... is moved by this tragedy,” President Sebastian Pinera said after flying to the site.

He said the deaths “call on our consciences to better care for our older adults.”

Bio Bio region Gov. Jorge Ulloa said staff at the home had checked the room 10 or 12 minutes before the fire “and didn’t find anything.” He said the doors to the dormitory were open, in line with regulations.

Prosecutor Michelangelo Bianchi, in charge of the investigation, told local news media that witnesses reported hearing an explosion similar to the sound of a short circuit.

Officials released the names of the women, but other details weren’t immediately available.