MUSCATINE, Iowa (AP) — Authorities have identified three people killed in an eastern Iowa house fire as a mother and her two daughters. The Quad-City Times reports that the Muscatine County Medical Examiner’s Office issued a news release Friday identifying those killed as 35-year-old Amy Wentz and her daughters, 17-year-old Andreah Schroeder and 6-year-old Lily Wentz.

The three died in the Monday night fire that destroyed their Muscatine home and critically injured another person, who has not been named. Officials say the injured person, who was found by firefighters outside the home, is in a coma at an Iowa City hospital.

Authorities say the cause of the fire is currently listed as undetermined. The investigation into the fire and deaths continues.