Deputies say ten Mexican nationals were arrested after the van they were traveling in was stopped Thursday north of Phoenix.
About two hours later, five more people were arrested during a separate traffic stop. On Friday, seven people from Mexico, Ecuador, Guatemala and Honduras were arrested.
Deputies say the people paid between $2,500 and $13,000 to be smuggled into the country. They were headed to various states, including Illinois, Massachusetts, Michigan, New York, Delaware and Kansas.
Some were booked into the Maricopa County Jail. Others were turned over to federal authorities. Police say 78 people have been arrested on human smuggling charges in the last several weeks.