WEST, Texas—Two more bodies were discovered Friday afternoon in this small town, raising the official death count from Wednesday's explosion at a fertilizer plant to 14, authorities said.

The rising death toll comes as officials continued to sift through the rubble of the massive explosion. McLennan County Judge Scott Felton revised an earlier estimate that 60 people were unaccounted for, saying "maybe one or two" individuals are still missing.

The larger estimate was given by Sen. John Cornyn during a news briefing earlier Friday.

Texas Gov. Rick Perry toured the parts of this town and described the sight as "pretty stunning." Speaking to reporters Friday evening, Mr. Perry thanked the first responders and citizen volunteers, adding, "One thing I say my blessings for is Texans helping Texans."

Earlier, Mr. Cornyn visited the site of the West Fertilizer Co., where fire broke out about 6 p.m. Wednesday then mushroomed into a devastating blast about two hours later, spreading deadly flames and debris. He was joined by Sen. Ted Cruz and Rep. Roger Williams, both Texas Republicans, who made a public offering of their condolences and support.