Daily Star reports that a man has been convicted after he put semen in a colleague’s water bottle and honey jar.

Stevens Millancastro, 30, carried out the vile acts after his co-worker rejected his advances after he asked her out on a date, a court heard.

The California man also put semen on the woman’s workspace, as well as in a bottle of honey she used for her tea.

Millancastro was convicted on assault and battery charges on Monday, September 21.

The colleague had filed a complaint against him to the HR department. She also asked her boss to tell Millancastro to stop staring at her, according to prosecutors.

However, when he did not stop, she filed the complaint.

Upon arriving to work, the woman found a “cloudy substance” in her water bottles on several occasions.

Her boss then agreed to place a surveillance camera facing her desk, and when she arrived one morning to find a “milky white substance” on her keyboard the footage was checked.

According to Mercury News the footage showed Millancastro had waited until the woman left before smearing his semen from a tissue on to her keyboard.

His semen was also found in the water bottles and jar of honey, say investigators.

The woman’s testimony stated that Millancastro made her feel “very, very uncomfortable.”

She said she was “disgusted” to find the bodily fluid on her personal property.

The crimes occurred in La Palma, California, between November 2016 and January 2017.

A sentencing is due to take place on October 6. Millancastro could face up to two years and six months in prison, and he will be required to register as a sex offender as he committed the crimes for sexual purposes according to the judge.