Richardson police say a vehicle was missing from the Mathews family's home at around the time 3-year-old Sherin Mathews disappeared Saturday morning.
Police are asking residents and businesses to check any surveillance video recordings from Saturday, Oct. 7, 2017, between 4 and 5 a.m. for any sign of a maroon Acura MDX.
The girl was reported missing by her father, Wesley Mathews, who told police he instructed the child to stand by a tree outside the home at 3 a.m. Saturday after not drinking her milk, according to police. He reported the child missing five hours later, police said.
There has been no sign of Sherin Mathews since.
Wesley Mathews was arrested Saturday on a child endangerment charge, and he was released Sunday night on $250,000 bond.
Police have said the girl's mother was asleep and is not facing charges.
Investigators removed three vehicles, including a maroon Acura MDX, from the family's home on Saturday evening for analysis.
Police are asking people to check their surveillance systems because detectives are working to retrace the path of the MDX. Police have not said who they believe may have been driving the SUV during that time frame, but the vehicle belongs to Wesley and Sini Mathews.
They wouldn't say how they know the SUV was missing during that time frame.
Police said, in a message posted to their Facebook page Thursday evening, that they are "asking for residents and business owners within an area where this vehicle could have traveled within that hour to review and preserve any video possibly containing this vehicle."
"Please keep in mind when reviewing your video, your time stamp may be different from the actual time," police added.
The are also encouraging home and business owners to review surveillance systems as soon as possible since systems typically retain video for only seven days.
When asked whether police consider Wesley Mathews a suspect in his daughter's disappearance, Sgt. Kevin Perlich said, "We are not coming out and saying that just yet."