The 13 businesses are accused of working with the Jalisco New Generation Cartel, a group designated by the U.S. government as a foreign terrorist organization.

The U.S. sanctioned four Mexican nationals and 13 Mexican companies for alleged fraud involving Puerto Vallarta timeshares.

The FBI says the Jalisco cartel began operating in the timeshare industry in 2012, running call centers in Mexico where employees impersonated U.S. brokers, attorneys and sales representatives to defraud property owners.