Montgomery County Police said they made "a calculated decision" to allow Tyler Tessier to participate in a news conference with the family of his girlfriend. Tessier has since been charged in the teacher's killing, police said.
Following the news Wednesday that Wilde Lake High School teacher Laura Wallen was found dead in Damascus, current and former students, teachers and community members rallied together to share their thoughts, prayers and condolences.
Wallen, who also previously taught at Murray Hill Middle School, had been reported missing on Sept. 5.
Here's a snap-shot look at just some of messages individuals have been posting on twitter: