adcelannotate = {"mobilepaywallcategory" : "MOBILE_PREM-BUSINESS","nativepaywallcategory" : "NATIVE_PREM-BUSINESS"};Two housing advocacy groups have filed a federal lawsuit accusing a major Columbus developer of violating the Fair Housing Act in eight of its central Ohio apartment complexes. The Central Ohio Fair Housing Association and the Miami Valley Fair Housing Center filed the suit Friday against Metro Development and affiliated companies.