The parents of two young girls say their daughters walked into a downtown restaurant bathroom and saw four people having sex. Their parents are so disturbed, they want all parents to be aware.

"They saw two women servicing two men in the restroom," Robert Schumann says. "Eleven years old is still not old enough to learn about such things as that."

"My 11-year-old asked me, 'How come two women were coming out of the bathroom and why were two guys in there?’ Melissa Schumann, the girls’ mother, says. ‘And they were making funny noises.'"

The Schumann’s contacted the managers at Taco Bell and suggested they lock the doors.

"She turned around and told me they used to lock the bathrooms because of this very issue but she was told to keep them unlocked because of all the complaints they got about the doors being locked," Robert says.

Taco Bell Spokesperson, Rob Poetsch, sent a statement that reads:

“The safety of our customers is our number one priority, and although this is an isolated incident, we’re having self-locking doors installed as a precautionary measure.”

Newscenter 16 went into the Taco Bell Thursday and found a note on the bathroom doors asking customers to get a key from the counter and lock the door behind them. But we were able to walk into the women’s room without a key. Once we spoke to a manager, she locked the doors right in front of us.

"It's scary because now I don't want to send my children to the bathroom by themselves and my 11-year-old doesn't want to be treated like a child,” Melissa explains. “She wants to feel grown up. I can't do that now."

"I was fuming. I was angry. I was upset. I was concerned," Robert says. He is pleased now the restaurant is taking action and installing locks to prevent people from wandering in.

South Bend police say public sex happens very often and in many places. They say they’ve gotten calls from this Taco Bell before, as well as other fast food restaurants, bars, cars, parks and almost any public place. But police say by the time they arrive, those having sex are either gone or not committing the act anymore.

Still, the Schumanns never thought having lunch at noon on a Saturday would turn so disturbing.

"We see police there all the time...eating there. And I figure, all right, police have made themselves known there so it should be relatively safe,” Melissa explains. “Nothing can really happen here. Oh, I was so wrong. I was so wrong."