DA sees no link so far between weapons possession, Texas blast August 7, 2013 -- Updated 1856 GMT (0256 HKT) So far, no links have been made between the charge and the accident The powerful fire and blast occurred in April A DA says the Texas Rangers performed a "thorough investigation" (CNN) -- Authorities in Texas have so far found no link between a deadly fertilizer plant explosion last spring and a charge of possession of a prohibited weapon filed against a paramedic who responded to that blast. A fire at West Fertilizer Company on April 17 led to the ammonium nitrate explosion, which killed 15 people -- most of them firefighters and paramedics -- and devastated West, a small town south of Dallas. The blast showed up on seismographs as a small earthquake and flattened or damaged dozens of homes, two schools and a nursing home nearby. Later, Bryce Reed, who was one of the emergency workers who responded to the explosion, was charged with having possessed materials for a pipe bomb. "Based on the information I have reviewed thus far," Abel Reyna, McLennan County criminal district attorney said in a statement Tuesday, "I have not seen any credible evidence linking Bryce Reed's alleged possession of a prohibited weapon to the fire and subsequent explosion at the West Fertilizer Plant." Reyna said the Texas Rangers performed a "thorough investigation regarding Mr. Reed's alleged possession of a prohibited weapon" and passed along reports and material to him. "However, I still have additional material to review," he said.