SIOUX COUNTY, Iowa ( KTIV /Gray News) - Iowa officials say three people, all under the age of 18, have died after an early morning house fire in a rural part of the state.

Sioux County authorities said the fire started at about 5 a.m. on Monday at a home that was a few miles northwest of Granville.

Firefighters reported heavy smoke coming from the home upon arrival, and assistance was called in from nearby communities.

According to the Granville Fire Department, firefighters found four people inside the residence in critical condition. They were transported by ambulance services to Orange City Area Health.

The Sioux County Sheriff’s Office identified the victims as 16-year-old Kolten Hofmeyer, 16-year-old Bryleigh Koob and 17-year-old Ashton Koob.

Sadly, they did not survive their i

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