By Patrick Smith—
NBC News
Police in Texas have asked for information about the whereabouts of an 11-year-old girl who disappeared four days ago.
Authorities said a car belonging to a man arrested Friday could be involved in the case.
Audrii Cunningham
was last seen near her home in Polk County, Texas, at 7:00 a.m. (local time) on Thursday.
She was supposed to take a bus, but authorities indicated that she did not get on it or show up at school that day, the Polk County Sheriff's Office said in a statement.
An Amber Alert has been issued, and the sheriff's office is working with the Texas Rangers, Department of Public Safety, Livingston Police Department and local firefighters.
Audrii Cunningham.Polk County Sheriff's Office
Cunningham is described as white and about 4 feet 1 inch tall.
She has blonde hair, blue eyes, and was last seen wearing black pants, a black hoodie with white lettering, and black sneakers.
[An 11-year-old Hispanic girl disappears in New York who was last seen getting into a car]
Don Steven McDougal, 42, was arrested Friday on suspicion of aggravated assault in what police said was an unrelated incident.
The sheriff's office said he was
"one of the persons of interest" involved in the case.
Detectives believe his dark blue 2003 Chevrolet Suburban was involved in Audrii's disappearance and are calling for anyone who saw him on Thursday or Friday to report him, the sheriff's office said in the statement.
A small backpack believed to have belonged to the girl was found at the Lake Livingston Dam, not far from the Cunningham family home.
Anyone with information about the case can contact the Polk County Sheriff's Office at 936-327-6810.
Tips can be submitted anonymously through the Polk County Crime Stoppers line at 936-327-7867, or online at p3tips.com or iwatchtx.org.