PHILADELPHIA—Authorities say a gas stove that had been left on started a fire in a west Philadelphia public housing high-rise that killed a 4-year-old boy last week.

Fire department officials told The Philadelphia Inquirer ( http://bit.ly/TCToRE) on Monday that two boys were playing in the kitchen of the sixth-floor unit of the West Park Apartments on Oct. 16.

Deputy Chief Derrick Sawyer said the boys were playing with a cloth or towel which ignited, and the blaze spread. Four-year-old Tymear Rose was later found hiding under a bed, and he was pronounced dead at Children's Hospital of Philadelphia.

Four other people in the 19-story Philadelphia Housing Authority building were injured.

Sawyer said he didn't believe anyone would be charged.

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Information from: The Philadelphia Inquirer, http://www.philly.com