There are safety concerns in the Spring Branch school district after at least four students at two schools say they were approached by suspects while walking to school.

The most recent case involved two middle school students Thursday morning.

"We had two other victims on their way to Spring Woods Middle School were approached by a black male who exposed himself," said SBISD Chief Bruce Dareing. "30 to 40 years of age in a gray four-door car."

On Wednesday, two Northbrook High School seniors said they were grabbed by a guy in a white Durango near the intersection of Crestdale, between Kempwood and North Raider Circle.

"The Hispanic male approached her and grabbed her buttocks and this female student fought this individual off, he jumped into a white SUV and drove off from the scene," HPD Capt. David Angelo said.

The second girl later reported the same thing happened to her.

“I feel better knowing that I pick them up, but it also makes me more responsible and want to be here earlier, before they get out, because it’s a crazy world out there, it is,” said Melinda Davila, who drops off her three kids at the school every morning.

The news was also unsettling for Northbrook students.

“It kind of terrifies me, I’m not going to lie,” said Raquel Solis.

“I really feel like it’s crazy because you can’t even walk to school, just to go to school, you have to worry about somebody trying to kidnap you, or touch you inappropriately,” said Christopher Hatcher.

SBISD police and HPD are investigating and patrols have been stepped up.

Police don't think the crimes are related.