Around 2 a.m., deputies got a call to the Haverstock Hills apartments on Aldine Bender near Lee.
Deputies say the mother called after her son got a gun and somehow, it went off and his 5-year-old sister was shot.
"Caller advises son was playing with gun and shot younger sister in the upper leg," a 911 dispatcher could be heard saying in Rangecast audio. "Advised not to touch the weapon. The weapon is still supposed to be on the bed."
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The girl was hit in the leg and taken to Memorial Hermann Hospital. She is expected to survive.
Harris County sheriff's deputies say there were four people in the home at the time of the shooting: the 5-year-old girl, her brother who allegedly shot her, another older brother and the children's mother.
ABC13 reporter TJ Parker is asking deputies where the 6-or-7-year-old brother got the gun and who the gun belongs to.
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