On Thursday, Czech police were alerted to an ongoing shooting at Charles University in central Prague. At least 15 people have died and about 20 have been injured. One of the dead is the suspected shooter.

24-year-old Klara Sandahl is studying to become a doctor at the school's Faculty of Medicine and was in a classroom in another building when the shooter fired shots.

"I was in class and saw that my mother called me several times. We found out what had happened and were allowed to go home," says Klara.

Once outside, she and her classmates were surrounded by siren sounds from police cars.

"It felt scary, especially because it was at a university. Prague has always felt safe, so it feels a bit surreal that it happened here," says Klara.

The university has cancelled all of Klara's classes on Friday. She believes that the school will take the situation seriously and do what is necessary to make the students feel safe.

"I feel safe now, but I'm sure it will be a little different when I come back after Christmas.

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See the pictures from Prague in the video. Photo: EBU/CZCT