CONCORD, N.C. — A third child has died after a house fire early Sunday morning, according to a spokesperson with the City of Concord.

The siblings were all inside the home when it caught fire shortly after 1 a.m.

Two children, ages 11 and 15, died in the fire and were pronounced dead at the scene. The third child, a 16-year-old, was taken to the hospital in critical condition, officials said. She died from injuries Sunday evening.

The names of the victims have not been released.

The fire happened at a one-story public housing duplex on Lincoln St. SW, which is owned by the City of Concord.

No other occupants were found inside and the “parents were not home at the time,” officials said.

The occupants of the adjacent unit evacuated before firefighters arrived, according to a news release.

The cause of the fire is under investigation.