PARMA, Ohio- Several employees were injured during a brutal attack at the Chuck E. Cheese in Parma Sunday night.

Just after 7 p.m., a woman attending a birthday party at the Chuck E. Cheese on Ridgewood Drive complained to the manager because the photo booth was not working, Police Sgt. Kevin Riley said. The manager told the woman she would have to wait.

That’s when one of the men from the party followed the manager into the kitchen, threatening to kill him. Parma police said the manager suffered injuries to his face and head as he was beaten. When employees tried to intervene, more men from the birthday party joined the brawl.

“Half of them were cheering him on, the other half were screaming.  Their children and grandchildren were running around while we were fighting and they don’t know what’s going on and there’s blood everywhere,” employee Andre Davis told FOX 8 News.

Employees called 911, saying two coworkers were covered in blood.

“I saw several people fighting and punching,” one worker told 911 dispatchers. “A customer was assaulting my managers.” One employee told police her phone was knocked out of her hand and she was hit in the face when she tried to call 911.

Riley said this wasn’t a fight, but a vicious attack on the employees. Six of them were injured. According to Chuck E. Cheese corporate office, all of them were taken to an area hospital, where they were treated and released.

“We are anxious to bring these individuals to justice and are actively working with Parma police to provide information that will lead to their arrest,” a Chuck E. Cheese spokeswoman said in a statement on Monday. “We are deeply saddened that individuals would choose to behave in this manner in front of children and families.”

The attackers fled before officers arrived. Police said they believe five men from the party participated in the assault that happened in the kitchen and dining room.

Anyone with information should call the Parma Police Department at 440-887-7340.