IGX

WHEN OFFICER Tamika Gross was accused of brawling with a civilian while on duty in 2009, the department disciplined her but allowed her to keep her job.

But Gross, 35, has kept on fighting, according to Internal Affairs documents, and now she is under investigation for allegedly bringing her suspended daughter back to school to fight a younger classmate last month and allegedly punching the 14-year-old rival in the face when her daughter began to lose.

"Gross has a history of getting in off-duty incidents involving her own children when they engage in disputes with area juveniles," according to a 2012 Internal Affairs report.

Tashiana Haggins-Montgomery, the mother of the alleged victim in the October case, said the beef between her daughter, Tashiyya Haggins, 14, and Gross' 16-year-old daughter, whose name the Daily News is withholding, began on Facebook. Gross' daughter saw a picture of Haggins with the 16-year-old's ex-boyfriend and assumed the two were dating. In reality, the boy is Haggins' cousin, and the photo was taken at a family reunion, said Haggins-Montgomery.

Facebook messages were exchanged between the girls, who are both students at Lincoln High School in Mayfair. According to Haggins-Montgomery, Gross reported to the school on Oct. 23 that her daughter was being harassed by Haggins, who was called to the office. Haggins said that when she showed the messages to school officials, they determined Gross' daughter was the one making threats.

Gross' daughter was suspended, Haggins' mother said.

When Haggins and her friend walked outside the main door later that day, she said, she saw Gross' daughter jump out of a silver Dodge Charger.

"She said, 'Mom, that's her right there!' " Haggins recalled. "Her mom got out of the car and said, 'Sure, you all want to fight over an autistic boy, go ahead and fight.' "

Haggins-Montgomery said the boy is not autistic.

Haggins said she and the other girl "got to fighting" and were "throwing punches" while Gross and her son watched by the car.

Haggins recalls hearing Gross' son say during the brawl: "Mom, don't jump in there, it's not your fight."

Gross didn't listen, Haggins said. "I was beating her up, and her mom jumped in and hit me in my eye," she said. "That's when everyone else started breaking it up."