Luckily, police said no one was seriously injured.
Castro and her four roommates were safe, but almost all of their things were destroyed.
Carley Carroll, who also lived in the apartment, told Fox4 she lost everything.
“I have nowhere to go. Everything I own is in there,” she said. “That's life threatening. If we were in our living room, we wouldn't have made it out because by what we've seen, it's just completely gone.”
About 50 other students have been displaced due to the incident, Fox4 reported.
The Denton Police Department, which didn't immediately return a request for comment from BuzzFeed News, is investigating the incident.