OAKLAND — BART agreed earlier this month to pay a San Francisco woman $1.35 million to settle a lawsuit alleging excessive police force.

BART, in a statement, accepted full responsibility for the injuries Megan Sheehan suffered after an officer slammed her face-first into the floor. The impact broke the bones in her face and smashed her teeth into her jaw, said Sheehan’s lawyer, Lizabeth de Vries.

Sheehan filed the lawsuit last year following her St. Patrick’s Day arrest in 2014 at the Lake Merritt BART station in downtown Oakland.

BART police said at the time that Sheehan was drunk, didn’t appear as if she could care for herself and was argumentative with officers who found her shortly after 8 p.m. on a bench inside the station. Officers arrested her on suspicion of public intoxication and resisting arrest, and Sheehan reportedly urinated on herself in the back of the police car as they transported her to Santa Rita Jail.

Sheehan had no recollection of the arrest or what happened afterward.

Inside the jail, police said officers removed her handcuffs so she could take off her jewelry. She was “initially compliant” but then became combative, flicking a hair tie at an officer after being told she couldn’t bring it in, according to police reports of the incident.

BART Officer Nolan Pianta, who was named in the suit, said one of the officers took away her purse after she refused orders to stop rifling through it. According to Pianta, Sheehan turned and punched him. But, de Vries said video evidence that surfaced as a result of the lawsuit told a different story.

In the video of the incident, an Oakland police officer can be seen grabbing her hand and pulling it around her back. Sheehan’s voice can be heard saying, “Don’t touch me like that,” followed by her being forced quickly to the ground and the sound of a loud thwack. Sheehan is then seen lying in a pool of her own blood, face down.

“Is she down?” an unidentified voice on the video asks.

“You might want to call medical,” says another.

Pianta would later write in his report that he used a takedown move and “guided her to the ground.” However, de Vries said the video evidence contradicts his version of events.

“When you have cases like this that show videos that are so dramatic, we hope that it will set a standard and hopefully provide some training material for what not to do in law enforcement,” de Vries said.

In a statement, BART officials said the agency was committed to reform.

“Over the past six years, the BART Police Department has undergone tremendous organizational change and has worked tirelessly to reshape and reform its approach to training and policing to better meet the needs of the communities BART serves,” the statement reads. “We hold ourselves to high standards of professionalism, and can and will do better to ensure incidents like this do not happen in the future.”

Pianta is still employed at the agency. BART officials said an internal investigation was underway when the lawsuit was filed, but that investigation was placed on hold pending the outcome of the suit. That investigation will now resume, and officials said “action that is deemed appropriate” would be taken at the conclusion of the investigation.

Erin Baldassari covers transportation. Contact her at 510-208-6428, and follow her at Twitter.com/e_baldi.