A woman started a fire in downtown Fort Worth's Sundance Square near the Christmas tree over the weekend.
Video shows a person close to the tree light something on fire. They then throw it on the ground. Witnesses are heard on video describing the person as a man but police later said the person was a woman.
Police took her into custody and she was transported to the hospital for mental health evaluations.
The tree did not catch fire and no other property was damaged.