A Milwaukee high school teacher who was allegedly caught performing oral sex on a 14-year-old is now accused of sexually assaulting a second student.

Megan Garland, 28, a science teacher at Messmer High School, was first popped on May 23, the New York Daily News reported.

She and the 14-year-old were allegedly caught in the act in the parking lot of another local school. Police say a passerby noticed Garland’s car rocking and saw that the windows were steamed.

The witness then walked over, opened the car door and allegedly found Garland performing a sex act on the victim.

The witness managed to detain Garland and the victim until police arrived, at which point, the boy confirmed the oral sex allegations.

One day after the alleged incident, Messmer High School officials suspended Garlandfrom her teaching duties, the Milwaukee Journal-Sentinel reported.

On Monday, a second male student, aged 15, came forward with similar allegations against Garland.

Dee Burt, who said her son knows the victims, predicts other students may be next.

“That’s probably not the only one that’s going to come forward,” she told TodaysTMJ4.com. “Certain students said they’ve seen this teacher picking up kids.”

So far, Garland is only charged with one case of second-degree sexual assault of a child, and she could face up to a $100,000 fine, 40 years in prison, or both if convicted, Fox6Now.com reported.

Garland is undergoing treatment at a medical facility after an alleged suicide attempt, according to CBS 58.

The mother of one of the victims said that the incident has affected her faith in the school’s ability to protect her child.

“Why they don’t know things about teachers when they walk through the door? How they look? Is they smiling? Is they sad?” the unidentified mother told CBS58.com. “That’s the part that has me distraught. I feel like I’ve been failed by Messmer.”

Read more: Huffington post