Nearly 800 students received emails stating they'd been accepted into the prestigious Carnegie Mellon University's school of computer science master's program. But shortly after those messages were sent on Monday, the school caught an error.

"This error was the result of serious mistakes in our process for generating acceptance letters. Once the error was discovered, the university moved quickly to notify affected applicants," Byron Spice, Director of Media Relations at the School of Computer Science, posted on the school's website.

The university said it's reviewing this process to make sure this error doesn't happen again.