Taylor Swift scheduled to testify in high-profile lawsuit

The pop star says she was groped by a radio DJ four years ago during a photo session.
1:42 | 08/06/17

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Transcript for Taylor Swift scheduled to testify in high-profile lawsuit
Back now with the big court battle involving Taylor Swift. She accused a radio D.J. Of groping her. So, why is she the one being sued? Here's Eva pilgrim. Reporter: Tonight, music superstar Taylor Swift preparing for a courtroom showdown in Denver with a former radio D.J. She says assaulted her. Swift claims former kygo radio D.J. Davide Mueller "Took his hand and put it up my dress." Grabbing her backside backstage before her Denver concert in 2013. Potential key evidence, this photo obtained by TMZ. The superstar saying, "It was completely intentional, and I have never been so sure of anything in my life." Swift herself is expected to take the stand. She's very sure about being a victim of this groping and she wants to prove that she has not fabricated this. Reporter: But in court documents and a radio interview last year, Mueller denies he groped swift. My hand was never under her skirt. I never grabbed her. Reporter: Mueller is suing swift in federal civil court for $3 million in damages, claiming the singer's reps pressured the radio station to fire him. Swift is countersuing for assault and battery. He has to prove that Taylor Swift either negligently and/or intentionally wanted him fired. Swift is expected in court Tuesday, and is required to be there each day by law until the case is finished. Tom? Eva, thank you. When we come back, the terror scare at the eiffel tower. What Paris authorities have just

This transcript has been automatically generated and may not be 100% accurate.

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