After Tuesday’s Celtics-Spurs game, referee Tyler Ford issued an explanation for Jaylen Brown’s second-quarter ejection.

In a postgame pool report, Ford said Brown’s aggressive behavior and use of profanity toward officials led to the Boston star receiving consecutive technical fouls with 3:38 remaining in the second quarter.

Brown was unhappy with what he viewed as a foul on San Antonio guard Stephon Castle that went uncalled. Multiple Celtics teammates held him back during his ensuing argument with Ford. Boston went on to lose 125-116.

QUESTION: What did Jaylen Brown do to receive the first technical foul?

FORD: “For aggressively pointing and using profanity and resentment to the no-call.”

QUESTION: What did Brown do to receive the second technical foul?

FORD: “He aggressively approached a game official while pointing and using profanity.”

QUESTION: Why was no foul called on the play before the first technical foul?

FORD: “In live play we did not observe any illegal contact.”

Ford called the first technical foul on Brown. The second was called by a different official, Suyash Mehta, who was positioned on the other side of the court.

Celtics head coach Joe Mazzulla referenced that point when asked about Brown’s ejection.

“I just give a ton of credit to my high school principal,” Mazzulla told reporters in San Antonio. “He had the balls to throw a student out. He didn’t leave it to the hall monitor.”

Later, Mazzulla said Brown’s reaction to the initial call was warranted. The Celtics’ All-Star wing has publicly criticized or questioned officials several times this season — including an NSFW postgame takedown of Curtis Blair’s crew after Boston’s previous matchup with San Antonio on Jan. 10 that got him fined $35,000 — arguing that he and the Celtics do not receive a fair whistle.

Minutes after he was tossed from Tuesday’s game, Brown tweeted: “This the (expletive) I be talking about.”

“I understand completely where Jaylen was coming from, absolutely,” Mazzulla told reporters. “I’ve got his back. I think he was 100% right to be frustrated and do what he did.”

Teammate Derrick White, who scored a team-high 34 points in the loss, agreed and called Brown’s ejection “ridiculous.”

“He thought he got fouled. I think he got fouled, too,” the mild-mannered guard told reporters, via NBC Sports Boston’s postgame coverage. “He definitely earned the first (technical), and I thought the second one was bull—-, honestly. It’s a passionate game, high-level game. … I think that was ridiculous. It was tough, obviously, to basically play the whole second half without him. Yeah, I thought that was ridiculous.”

Brown, who’d been ejected just once before in his 10-year NBA career, nearly notched a first-half double-double before his exit, tallying eight points on 4-of-8 shooting, seven assists, two rebounds and one steal in 15 minutes of floor time. White, Jayson Tatum (24 points) and two-way wing Ron Harper Jr. (career-high 22 points on 8-of-11 shooting) shouldered the scoring load without him, and the Celtics trailed the Spurs by one midway through the fourth quarter before fading late.

Boston also played without core reserves Payton Pritchard (neck spasm) and Nikola Vucevic (fractured finger), who both sat out with injuries.