Investigators said the victim, a worker at Beisswenger's hardware store in New Brighton, told officers she "noted a strong odor that resembled urine, but was somewhat different and strange" coming from her coffee mug and she found a liquid she suspected to be semen dripping off her desk and onto the floor.
The woman told police she had "an ongoing issue with a foul taste in her coffee" that she previously attributed to "spoiled milk."
The woman told officers she suspected the culprit was John Lind, 34, the Plumbing and Heating department manager the store who would often approach her with the zipper of his pants open.
Lind admitted to police he ejaculated into the woman's coffee and onto her desk on repeated occasions because he was "attracted" to the woman and he felt "a sexual compulsion that he could not control."
Lind told police he found his own actions "gross and wrong."
A criminal complaint filed Thursday charges Lind with two counts of felony sexual conduct.