LAGRANGE (Sean Rowe) -- A coroners reports confirms that a toxic amount of caffeine caused the dead of 18-year-old Logan Stiner. Crowned prom king of .<br>The family of an Ohio student who died just days before graduation is suing Amazon.com and others after a coroner determined the teen died of a caffeine .<br>No description.<br>Logan Stiner, an Ohio teenager, recently died because of a caffeine overdose. He was a successful high school student, a wrestler and even Prom King.<br>A teen, and former prom king, died due to toxic levels of caffeine found in his body. According to a coroner, Logan Stiner died from an irregular heartbeat and .