CASTLE ROCK, Colo. (CBS4) – Two teenagers have been arrested in connection with making a threat against their high school. The Douglas County Schools Superintendent said it was handled the best it could have which stopped the threat in its tracks.

Two 16-year-old females were arrested Monday and placed in a secure location. They face charges of threatening students and staff at Mountain Vista High School in Highlands Ranch.

The Douglas County Sheriff’s Office learned of the threat against the Highlands Ranch school on Saturday through the school district’s Text-A-Tip line. The threat was intended to take place at the school sometime this week.

The superintendent wants to personally thank the student who alerted police.

“I have a lot of things I’d like to say to them. They took what would feel like a risk, as a teenager, to share something with adults and as a result of that decision that made a difference in a lot of lives, a positive difference in the lives of a lot of people,” said Douglas Co. Schools Superintendent Liz Fagan.

Students also felt thankful for the reporting system and the brave student who made the report.

“It would say, ‘Good job,'” said sophomore Glen Ritz. “We don’t think much about this stuff until it actually happens in a place that we’re familiar with, especially our own school.”

The sheriff’s office says the teens took substantial steps to proceed with their plan, but deputies would not elaborate on the method of the attack or any weapons involved.

Douglas County Sheriff Tony Spurlock says the teens face felony charges, including conspiracy to commit murder and will be prosecuted.

“We will take action to apprehend the individuals who make threats against the Dougco schools,” said the sheriff.

The teens have not been identified but a social media site associated with one of the 16-year-old suspects found by CBS4 is Satanic in nature. The site includes pictures of weapons, bloody crimes scenes and guns. The site has been removed.

“What makes it different is you have professional law enforcement investigators deeming it a credible threat with ample evidence to do so and significant pending charges that speak for themselves,” said Fagan.

The district has received 231 Text-A-Tips so far this year.