FAYETTEVILLE, N.C. — Fayetteville police are investigating four recent carjackings. Two incidents took place on campus and two off campus.

Methodist College got hit first, with an attempted carjacking on campus. Two armed robbers demanded money and the car keys from its owner in a parking lot.

"You kind of look over your shoulder a little more often," student Heather Burch said.

A few hours later, a successful carjacking happened at Fayetteville State.

"It's kind of scary. It's supposed to be safe on college campus," said FSU student Tavarus Moore.

Within 24 hours, there were two more carjackings in neighborhoods near each school.

Investigators believe all four cases are related.

While no one has been hurt, each school has posted flyers to warn students of the danger.

"All we can do is try and educate people and give them the tools that they need to protect themselves," Methodist College spokesperson Cynthia Curtis said.

Now, more than usual, students are keeping an eye out for anything unusual.

"It's kind of creepy. You have to wonder about what you're doing at night and who is going to approach you," Burch said.

Even on campus, students are looking over their shoulders looking for possible suspects lurking around them and their cars.