Texas Border Patrol agents busted yet another human smuggling operation, this time involving 33 illegal immigrants packed inside a 100-degree U-Haul van with zero ventilation. 

U.S. Customs and Border Protection agents made the discovery on June 10 outside a McDonald's restaurant in the west Texas town of Van Horn. 

More than 30 illegal immigrants packed into the back of U-Haul in sweltering heat.  (CBP)

The immigrants inside the U-Haul truck were suffering from heat-related maladies and around a dozen needed medical treatment, but none died, according to a local station

"Had our heroic agents not been able to free these trapped undocumented migrants, we could have seen 33 miserable deaths in this event," Border Patrol's Big Bend Sector Chief Sean McGoffin told KVIA. "Smugglers do not care what type of misery they put people through as they take their money."

TWO SOLDIERS CHARGED WITH ATTEMPTING TO SMUGGLE ILLEGAL IMMIGRANTS INTO TEXAS

No additional details were provided. Fox News has reached out to Border Patrol’s Big Bend Sector seeking comment. 

The discovery came less than a week after agents intercepted another U-Haul truck carrying 27 illegal immigrants.

Officials said the temperature inside was 106 degrees Fahrenheit.   (U.S. Customers and Border Protection)

Like those found in Van Horn, the temperature inside the truck was blistering hot, 106 degrees. None of the immigrants were wearing personal protective equipment.  

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U-Haul declined to comment when reached by Fox News.