A police report includes new details about a fight during a Boston Bruins game at TD Garden on Saturday that resulted in a man being seriously injured.

Boston police said in their incident report that officers assigned to a detail for Saturday’s game responded for “a person that fell off the balcony” around 3:07 p.m. Multiple officers were called to Loge Section 2 for an initial report from TD Garden security of an unconscious male who had fallen down to that section from the above balcony level.

As officers gathered more information from multiple witnesses in the area, it was determined that the victim was pushed while standing on the stairs and fell backward, according to the police report.

The officers and TD Garden security found the victim lying on the ground, semi conscious and breathing, with his eyes slightly open in Row AA of Club Section 113. Officers immediately began to render aid and requested EMS, who stabilized the victim on scene before taking him to Massachusetts General Hospital for further evaluation.

The victim, whose name has not been released, told police en route to hospital that he drank something and had no memory of the incident and didn’t know why he was going to hospital. He sustained an abrasion to the back of his head, police said. The extent of his head injury was not immediately known.

Back at TD Garden, officers gathered more witness statements to locate and identify the suspect.

One witness told police that he was in same row and observed the victim to be intoxicated and agitating the suspect and the woman that he was with. He said he saw the victim put his middle finger directly in the face of the suspect’s companion.

A second witness told police that both the victim and suspect were heckling each other back and forth. Then the victim allegedly continued to inch closer to the suspect and his companion, at which point the suspect allegedly grabbed the victim by the neck and pushed him, causing him to fall backward down the stairs.

Another witness gave police a suspect description of a man with long black hair, wearing glasses and a New York Rangers hat and jersey. She stated that a disturbance ensued while the victim, who appeared to be intoxicated, was harassing other Rangers fans. She said friends were trying to get him to leave to avoid continued escalation but the fight continued until the victim was pushed down the stairs “where he rolled down the stairs to the lower foyer.”

A fourth witness said that during intermission between the second and third periods, he saw the suspect and his female companion having a discussion where it looked like the woman was trying to get the suspect to leave. The witness told police he then saw the victim and the suspect arguing. The suspect, who was standing higher up, then pushed the victim down the stairs, at which point the witness notified his security team and waited for Boston police to respond. He said the suspect left right after he pushed the victim.

An additional witness seated in the area said she saw the suspect and victim arguing before she saw the victim fall three to five steps down, followed by the suspect heading up the stairs towards the Club Level to leave the area.

A description of the suspect was broadcast, and he was later identified as 48-year-old Aaron Tucker, of Vermont, according to the police report. He was seated in Section 113, Row E, during the game and was wearing a black hat with a blue NY Rangers #73 jersey, as well as a black sweatshirt underneath and blue jeans.

A photo of Tucker was disseminated by detectives, and TD Garden security cameras captured the suspect leaving the venue around 3 p.m. through the east exit before continuing on foot down Causeway Street.

Cameras captured Tucker and the woman he was with at the game in the area of Endicott Street and Lafayette Avenue, according to police. Officers located and approached Tucker on Lafayette, where he was taken into custody without incident.

Tucker was taken in for further questioning by detectives and then transported to Nashua Street Jail, where he was booked for the alleged aggravated assault. Tucker is facing charges of assault and battery resulting in serious bodily injury and assault and battery on someone 60+ or disabled with injury.

He is scheduled to appear in court on Monday. It wasn’t immediately clear if he had hired an attorney.