Sen. John CornynJohn CornynCongress's goal in December: Avoid shutdown and default Mental health: The power of connecting requires the power of investing Senators call for Smithsonian Latino, women's museums to be built on National Mall MORE (R-Texas) said 60 people are still unaccounted for after a massive blast at a Texas fertilizer plant on Wednesday.

Twelve bodies have been recovered — most of them first-responders — but local officials fear the death toll could rise precipitously.

Cornyn toured the blast site on Friday, along with Sen. Ted CruzRafael (Ted) Edward CruzSenate nearing deal on defense bill after setback Congress's goal in December: Avoid shutdown and default Overnight Defense & National Security — US, Iran return to negotiating table MORE (R-Texas). Afterward, he told The Dallas Morning News that 60 people were still missing, but that some of them may just be staying with friends or family.

"There are a number of confirmed dead but a number who are unaccounted for," Cornyn told reporters at a press conference.

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On Wednesday night, a massive explosion at a fertilizer facility in West, Texas, injured more than 160 residents and leveled a four-block area around the blast. 

Cruz said it was too early to begin assessing blame for disaster.

"We need to allow time for a careful investigation of what occurred. We all want to know what happened here," he said. "It would be a mistake to rush to a conclusion."