A teenage girl has been charged with assault following a Dec. 12 incident on the campus of TechBoston Academy. The juvenile, who has not been named because of her age, is alleged to have a record for crimes committed elsewhere in Boston, according to Boston Police Officer Shawn Harris, the community service officer for Area B-3 who described the incident during the Codman Square Neighborhood Council meeting last week.

“It’s at least the tenth violent incident that she’s been part and parcel of,” said Harris. “We’re hoping to get her the help she needs.”

Harris said the Dec. 12 assault occurred around 5:30 p.m., well after school had been dismissed, when a group of girls approached another teenager and asked if she had “messed with Wainwright” –a reference to the city park and street near Codman Square. The girl was then attacked. Harris said the main attacker was well known to police for taking part in violent incidents at South Bay Mall and Downtown Crossing early last year.

Harris also told council members about an incident at the school on Dec. 15 around 11 a.m., when police were called after a report of an assault and robbery on a student. Harris said the victim was walking out of a classroom when two students attacked him and allegedly stole his iPhone 14 and some cash. They were described as laughing when they hurled a racial epithet at the victim before leaving.