Parents sue their son's alleged third-grade bully

An alleged third-grade bully is being sued in a lawsuit that claims he subjected a schoolmate to almost weekly verbal and physical attacks.

Deveri and Matthew Del Core said their son, Joaquin, was the victim of the bullying at Robert Frost Elementary in Mount Prospect outside Chicago.The lawsuit seeks $50,000 in damages from the alleged bully, his parents, the school district and Robert Frost's principal.

“There was everything from choking my son and threatening to kill him, said he was going to go home and get a knife and come back and kill him,” Deveri Del Core told 5NBCChicago after she and her husband filed the lawsuit in Cook County Circuit Court. “My son would wake up at night screaming and crying, terrified, and did not want to go to school.”

Del Core told the station that hours after filing the complaint,she was fired from her job in her son’s school cafeteria.

The lawsuit accuses the alleged bully’s parents of failing to discipline their child to stop the behavior.

The station said the school district did not comment on Del Core’s firing. And in response to the lawsuit, district superintendent Kate Hyland told the station that school officials “take bullying prevention very seriously.”