An Alabama Islamic organization is asking for an investigation after a Muslim family said a McDonald's purposefully served them bacon.

The family ordered 14 McChicken sandwiches Monday and found bacon inside each one. The McDonald’s McChicken sandwich should only include a chicken patty, bun, shredded lettuce and mayonnaise.

Khaula Hadeed, head of the Alabama chapter of the Council on American-Islamic Relations, told AL.com the incident was “an intentional act of religious and ethnic bigotry."

Because of religious reasons, Muslims do not eat pork. One adult vomited twice after noticing the bacon, AL reports.

The family, who has not been named, reportedly ordered the sandwiches at a Decatur, Ala., location. The operator of the McDonald's location denied the act was intentional.

“We want to assure our customers that this was not an intentional act by our employees,” said McDonald's operator Rick Walter in a statement, Decatur Daily reports. “We value every customer and strive to ensure all orders are accurately prepared and served."