(Iron Ridge) An Iron Ridge man was found guilty Tuesday of Second Degree Reckless Homicide in connection to a fatal opioid overdose. Timothy Sedlmeier pled no contest to the reduced felony count after first facing First Degree Reckless Homicide charges in the October 2017 death of Samantha Mattila. Prosecutors say the 29-year-old had known the victim, Samantha Mattila, for approximately one year. They had spent the days leading up to her death together, snorting heroin. Sedlmeier says he fell asleep on the couch the night she died and when he woke up, he found the 19-year-old slumped over the bathtub. The heroin that he put in a drawer for himself, he said, was gone. He assumed she had taken it. He told investigators that he bought the heroin that she used but did not supply it to her. Toxicology tests later confirmed that Mattila died of the synthetic opioid Fentanyl, which is said to be up to 200 times as potent as morphine and is responsible for scores of deaths nationwide. A pre-sentencing investigation was ordered and Sedlmeier is due back in court on May 6th.