Authorities in Texas say a man engaged in a sexual relationship with an underage teen girl after meeting her online and gave her a serious sexually transmitted disease in the process.

According to KTRK, 24-year-old Simm Sorn is accused of sexually assaulting the girl, who was 16 years old at the time, during an encounter earlier this year.

Police began investigating the man after the alleged victim’s father contacted the Harris County Precinct 4 Constable’s Office in February to file a complaint.

Reports indicate the teen initially refused to cooperate with the investigation but later acknowledged that she and Sorn had sex at least twice at the suspect’s residence.

She allegedly told detectives that she met Sorn in February after sneaking out of her house, according to KHOU.

The two went to his home, she said, and he gave her a ride to school the following morning. Police say she claimed he stopped at a Walmart location on the way to purchase Plan B, the so-called “morning after” emergency contraceptive pill, for her to take.

She claimed Sorn knew her age when they met on Facebook and arranged the meeting. Furthermore, she alleged he gave her chlamydia.

The suspect allegedly confessed to having sex with her at home and buying the contraceptive. He also admitted he had the sexually transmitted disease, which he acknowledged transmitting to two other women, according to court documents.

Sorn allegedly told investigators that he has not been treated for the illness.

After he was arrested, he was transported to the Harris County jail where he was booked with bail set at $30,000.

[Featured image: Simm Sorn, Constable Mark Herman’s Office]