Texas Lt. Governor Dan Patrick put the blame for the deaths of 10 illegal aliens packed in the back of an 18-wheeler on sanctuary cities.

“[Sunday’s] tragedy is why I made passing Senate Bill 4 to ban sanctuary cities — which is now law — a top priority,” the Republican Lt. Governor posted on Facebook. “Sanctuary cities entice people to believe they can come to America and Texas and live outside the law. Sanctuary cities also enable human smugglers and cartels.”

Initially, eight people lost their lives from exposure to the heat and lack of water after human smugglers left 39 people locked in the back of a refrigerated trailer with a failed air conditioner. The death toll rose to nine later on Sunday and then to 10 early Monday.

“[T]hese people paid a terrible price and demonstrate why we need a secure border and legal immigration reform so we can control who enters our country,” Patrick wrote. “We continue to pray for the families and friends of the victims.”

Officials identified the driver of the truck as 60-year-old James Mathew Bradley, Breitbart Texas reported. He is a resident of Clearwater, Florida, according to the U.S. Attorney’s Office for the Western District of Texas. He is due in court Monday to face charges that will likely include murder and human smuggling.

Walmart employees became aware of the people being trapped in the trailer after one of the aliens approached them and asked for water. Police arrived at the scene shortly after midnight Sunday morning. At least 29 fire rescue units responded and two AirLIFE helicopters assisted in transporting the most critically ill patients.

Surveillance cameras showed a number of automobiles coming to pick up individuals in the trailer. Authorities suspect a human smuggling operation was underway.

Medical teams transported nearly two dozen people to local hospitals, including two 15-year-old males. All of the deceased illegal aliens are reported to be adult males.

Bob Price serves as associate editor and senior political news contributor for Breitbart Texas. He is a founding member of the Breitbart Texas team. Follow him on Twitter @BobPriceBBTX and Facebook.