Five people trying to cross the border illegally have died in the past three weeks in Yuma.
Mexican authorities in the border state of Sonora are awaiting a U.S. extradition order for a man wanted in the murder of his wife and four daughters in New Mexico.
The suit was filed in U.S. District Court in Tucson last week.
Federal agents are investigating a Yuma area shooting.
Part 5: Over the last three years, tens of thousands of unaccompanied minors have fled Central America for the U.S. At least 19 have wound up in the hands of labor traffickers.
Part 4: In the last two years, more than 10,000 child migrants have faced deportation proceedings without ever finding a lawyer to help them. Thousands more children face the same fate despite government efforts to fund more free lawyers.
Part 3: The border Mexico shares with Guatemala has changed since Mexico began its southern border plan in 2014. A town that once symbolized the migrant trail is now emblematic of how migration routes have splintered and become more dangerous.
Part 2: Since the child migrant crisis unfolded two years ago, the United States has assisted Mexico on its southern border. The result has been rising deportations from Mexico amid a rise in allegations of corruption against its immigration agents.
Part 1: Refugees from Central America are pouring into the United States, a trend from 2014 that seems to be growing along the U.S.-Mexico border again this year. Many of them are children, sent here alone.
Herold Demes was sentenced to one year probation and ordered to pay about $3,500 in penalties after he sold parts from Border Patrol vehicles on eBay.