A McDonald's on Nostrand Avenue in Flatbush is carding people to enter.

A sign outside reads "No one under the age of 20 is allowed in this restaurant without a parent and proper identification."

Customers tell News 12 the area has had incidents of crime. The NYPD says there have been over two dozen 911 calls at that address this year alone.

The McDonald's is blocks away from Brooklyn College and other public schools. News 12 spoke with customers like 19-year-old Saniya Nightengale who says it takes away food options.

"This is where kids go to get cheap meals and stuff, so it's going to be really hard to get a meal now," she said.

News 12 reached out to McDonald's about the signs, but had not heard back as of Sunday night.