According to Fox news
Thomas Bryon Stemen, 51, was arrested Tuesday and charged with first and second-degree assault and reckless endangerment after police allege he attacked a woman outside a grocery store on February 18, the Anne Arundel County Police Department said.
Police were called to a parking lot on 5570 Shady Side Rd. in Churton at around 7 p.m. over reports that an adult female had been assaulted and poked by what appeared to be a syringe.
Stemen was arrested on Tuesday but at that point police still couldn’t confirm what Peters had been stabbed with.
On Friday the Anne Arundel County Police Department learned that the substance in the syringe was semen. Authorities warned that there are likely more victims and that the investigation is “extremely active” and more charges could follow.”