DALLAS (CBSDFW.COM) – Dallas police responding to an early morning shooting call in the Lake Highlands area arrived to find two children injured by gunfire.

The shooting happened just after 2:00 a.m. at the Colinas Royale Apartments in the 9400 block of Royal Lane.

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Police say an unknown person/persons fired “several rounds from automatic weapons” into an apartment at the complex, hitting a 13-year-old boy and 10-year-old girl.

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When police arrived there was an uninjured adult man in the apartment with the children. The 13-year-old boy was the most seriously hurt, with a gunshot wound to the  back of the head. The 10-year-old girl was grazed by a bullet on her back.

Both children were taken to Children’s Medical Center Dallas. Their exact conditions aren’t known, but the children’s mother spoke with a CBS 11 News crew and said her daughter is doing okay, but her son isn’t.

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The Dallas Police Department Gang Unit is handling the investigation but say they have made no arrests and have no suspect information at this time.