A coalition of more than 20 consumer advocacy groups is expected to file a complaint with federal officials on Monday claiming that YouTube has been violating a children’s privacy law.

The complaint contends that YouTube, a subsidiary of Google, has been collecting and profiting from the personal information of young children on its main site, although the company says the platform is meant only for users 13 and older.

The coalition of consumer groups said YouTube failed to comply with the Children’s Online Privacy Protection Act, a federal law that requires companies to obtain consent from parents before collecting data on children younger than 13. The groups are asking for an investigation and penalties from the Federal Trade Commission, which enforces the law.

“Google has been continually growing its child-directed service in the United States and all over the world without any kind of acknowledgment of this law and its responsibilities,” said Jeffrey Chester, executive director of the Center for Digital Democracy, one of the groups leading the coalition. “It’s living in a world of online fiction and denied that it’s serving children.”