UPDATE - The TBI has canceled the Endangered Child Alert for Alexis Sullivan. The teen was found Thursday near Clarksville, Tennessee.

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CHATTANOOGA (WRCB/TBI) -- An East and Middle Tennessee Endangered Child Alert has been issued for the Maryville Police Department for Alexis Sullivan.

Alexis Sullivan is in the company of Brittany Mostella and Shelby Nunley. All three children are missing from the Johnson Group Home in Maryville, Tennessee.

A vehicle that authorities believed the three missing girls were in, was located in Clarksville, Tennessee on Wednesday.

Brittany and Shelby have made threats toward harming Alexis once they ran from the group home. The girls may be armed with a pair of scissors that are missing from the home.

The girls were last seen at approximately 11:00 p.m. eastern time on June 27, 2011, at a gas station in Rockwood, Tennessee in Cumberland County, Tennessee.

The girls may be traveling to either the Sparta, Tennessee, Jackson County, Tennessee or Clarksville, Tennessee areas.

Alexis is a 12 year-old white female with blonde hair and blue eyes. She is 5'5" tall and weighs 125 lbs. She was last seen wearing a dark green shirt, black shorts and black Nike shoes.

Brittany Mostella is a 14 year-old black female with black hair and brown eyes. She is 5'6" tall and weighs 210 lbs. She was last seen wearing a black t-shirt, purple pajama pants, and gray Levi's shoes.

Shelby Nunley is a white female with brown hair and brown eyes. She is 5'2" tall and weighs 98 lbs. She was last seen wearing a olive green jacket, black shirt, red and black shorts, white Nike Air Force One shoes, and blue boxers.

If you see the children call the TBI at 1-800-TBI-FIND.