A Miami nonprofit is suing Jungle Island for charging extra for a ramp so that award recipients with disabilities could reach the stage at an event.

The fair-housing organization Housing Opportunities Project for Excellence claims the zoological park and its caterer violated the Americans with Disabilities Act by charging $2,261 for the ramp. The city of Miami, which owns Watson Island and leases to Jungle Island, is also a defendant in the federal lawsuit filed Oct. 16.