(CNN) Houston police have issued an Amber Alert and are asking for the public's help finding a 4-year-old girl.

The Houston Police Department initially said Maleah Davis was last seen around 9 p.m. Saturday night, and was thought to be with three unknown males in a blue Chevrolet pickup truck.

According to police, Maleah's stepfather told authorities that he, Maleah and Maleah's 1-year-old brother were "abducted by 3 males sometime Friday night" in North Houston.

The stepfather, Darion Vence, said he and the boy were then dropped off Saturday night in the Sugar Land area, just southwest of downtown.

Maleah was last seen wearing a light blue zip jacket, blue jeans, sneakers, and had a pink bow in her hair, police said.

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