RENSSELAER, N.Y. (AP) — Three people have been killed, including a child, in an early morning house fire in upstate New York.

The Albany Times Union reports the blaze began early Sunday at a home in Rensselaer.

Police have not yet released the names of the victims, but reports say they were a mother, a grandmother and a young son.

The newspaper says a daughter is hospitalized in critical condition and another child was able to escape to a neighbor's house for help.

Authorities say it took firefighters less than an hour to bring the fire under control. The house was completely gutted.

The cause of the fire is unknown.

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Information from: Times Union, http://www.timesunion.com