It's been two days since 4-year-old Maleah Davis vanished.
He told police he was in and out of consciousness until about 6 p.m. Saturday, when he woke up on Highway 6 with the 1-year-old boy.
Detective Mark Holbrook explained what he believed happened next at a press conference on May 4.
The girl's mother waited for Vence at the airport, according to police, but when they failed to show up they did not report him missing until the following morning.
"According to Darion, what happens next is a blue pickup truck pulls up behind him, two Hispanic males get out".
"She's needed a lot of care", Holbrook said. He said police hoped the public could help them "fill in the blanks" in the narrative provided to them by Vence.
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Authorities said they are concerned for Maleah's safety - not only because she may be in the hands of kidnappers, but also because she has endured significant health problems, including multiple brain surgeries, the most recent of which she underwent about a month ago.
The search for Maleah Davis intensified on Monday as volunteers passed out fliers in Houston and searched a field near where the girl's stepfather, Darion Vence, 26, told police three men accosted him when he had auto trouble on Friday evening and took him, Maleah and his 2-year-old son hostage before dumping him and the toddler on the side of a road and fleeing with the little girl.
According to police, Vence remained unconscious for almost 24 hours before fully waking up around 6pm on Saturday on Highway 6 and realizing that Maleah was gone. The other man hit Vence in the head and he lost consciousness.
The auto Vence was driving - a silver Nissan Altima belonging to Maleah's mother - is also missing, police said.
They are also searching for Vince's missing vehicle, a silver 2011 Nissan Altima with temporary tags 330-92G9. He was asked if there's corroboration that Vence was wondering with a toddler.
Maleah was last seen near the Southwest Freeway and Highway 6 in Sugar Land, Houston.
Authorities issued an Amber alert that included a description of the outfit Maleah was wearing when she disappeared: a pink bow in her hair, a light-blue zip jacket, blue jeans and sneakers that are gray, white and pink. She is approximately 3-feet tall and weighs 30-40 pounds. She is African-American, with black hair and brown eyes.