A 13-year-old girl who has been missing for two weeks in Mesa, Ariz., may be with a 19-year-old man she met at a shopping mall, MyFoxPhoenix reported Tuesday.

The teen, Brittnee Plant, has been the subject of a desperate search since she vanished Nov. 20 from her home. Although it appears Brittnee ran away during the night with an adult male identified only as "Chris," her family and authorities fear that she is in danger and being held against her will.

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According to reports, Brittnee called home a week after disappearing, speaking briefly to her mother the day before Thanksgiving. Brittnee's mother, Lesa Stephens, told MyFoxPhoenix that her daughter said "I love you mom," before abruptly ending the call. Stephens said she heard a noise in the background, as if someone had entered the room, just before the line went dead.

Brittnee, an eighth-grader, has not been heard from since.

Brittnee's friends have told authorities that "Chris" had been trying to convince Brittnee to run away with him for some time. Police have no other leads on the identity of "Chris" or Brittnee's whereabouts and are asking the public for help in finding the young girl.

Anyone with information should call the Mesa Police Department at 480-644-2211.