succinylcholine is a drug kimberly hricko would have had access to as a medical technician.s used to relax the muscles before putting an intubation tube down a patient's throat. in large doses, it is lethal. succinylcholine is broken down by human enzymes almost immediately and is, therefore, untraceable. >> kimberly, being a medical technician assisted in surgery, and we knew that and we learned that succinylcholine is on the cart there, but it is not accounted for as narcotic drugs are required to be accounted for. >> steve's autopsy found no traces of succinylcholine. police contacted laboratories throughout the united states to see if there was a test to find succinylcholine in human tissue and they found none. investigators tried to locate the store where steve purchased the cigars found in the hotel room. sergeant joe gamble visited 26 convenience stores in the vicinity of the hricko's home. in one he found the same brand of cigars. when the clerk was shown pictures of steve and kim hricko, she identified kim as the one who purchased the cigars and beer. >> she remembe