Taylor Swift's ongoing groping trial - The full breakdown.

Taylor Swift testified in court Thursday that a Colorado DJ groped her backstage after a concert.

The singer took the witness stand in a Denver federal court and said, "it was a definite grab. A very long grab."

The incident allegedly happened after a June 2013 concert when Swift was 23. Denver DJ David Mueller, who was a radio personality with 98.5 KYGO in Denver at the time, met Swift after the concert.

After posing with Swift for a photo, Swift’s security team later accused him of inappropriately grabbing Swift’s rear end and he was subsequently fired, Mueller said in a lawsuit he filed against the star.

Swift stated in her deposition, “Right as the moment came for us to pose for the photo, he took his hand and put it up my dress and grabbed onto my ass cheek, and no matter how much I scooted over, it was still there. It was completely intentional. I’ve never been so sure of anything in my life.”

There is a photograph that allegedly shows the DJ groping her.

Mueller testified in court this week that he and Swift were trying to reach around one another for the photo and “our hands touched and our arms touched.” He added that he could have touched her “rib cage, or rib or ribs.” 

Here’s what you should know about the case as the trial begins this week in Denver:

Mueller sued Swift first

Mueller sued Swift in September 2015 after he said he was fired from his job and lost other business opportunities because of the allegations.

He has said that his former boss, Eddie Haskell, was the one who allegedly groped Swift after the Pepsi Center concert, claiming that he heard Haskell bragging about it, according to Billboard.

The Denver Post reported that Mueller was making a base salary of $150,000 when he was fired – not including bonuses, product endorsement fees and other public appearance fees.

Swift countersued Mueller in October 2015 – and demanded a jury trial, People reported at the time.

“Resolution of this counterclaim will demonstrate that Mueller alone was the perpetrator of the humiliating and wrongful conduct targeted against Ms. Swift, and will serve as an example to other women who may resist publicly reliving similar outrageous and humiliating acts,” the countersuit states.

TAYLOR SWIFT TRIAL: TESTIMONY DELAYED

Her countersuit claims that Mueller was fired twice from other on-air radio jobs and hadn’t worked as an on-air personality since May 2006.

Swift said that she would donate any money won in the trial to “charitable organizations dedicated to protecting women from similar acts of sexual assault and personal disregard.”

A federal judge sanctioned Mueller last month as he admitted to losing or destroying electronic devices that could have contained key evidence – including a recorded conversation between him and his boss the day before he was fired.

U.S. District Judge William Martinez said the lost data was critical evidence in the case.  

Fans can attend the trial – but there’s a catch

Passes will be available to the public on a first-come, first-served basis for morning and afternoon sessions, according to the Denver Post

But for those wishing to attend the trial, there are some rules, the Denver Post reported.

Attendees can't bring phones, tablets or laptops with them. 

And attendees are prohibited from wearing any clothing or buttons that include the names of anyone involved with the trial or that address the issue.

More trial details

The trial is expected to last approximately nine days, according to the Denver Post. 

The trial began on Monday. Swift’s mother, Andrea Swift, already testified and said she didn’t call the police as she wanted to keep the matter private and not have it define her daughter’s life.

Mueller's lawyer, Gabriel McFarland, showed jurors the controversial photograph during his opening remarks. Two jurors stared at the photo on their computer monitors while a few others kept glancing at it as McFarland spoke.

"If you look at that photograph, his hand is not underneath Miss Swift's skirt, and her skirt is not rumpled in any fashion," McFarland said, noting that no one on Swift's concert team saw anything amiss.

The Associated Press contributed to this report.

Source: foxnews.com