Monica Schipper/Getty ImagesAnnaSophia Robb is mourning today's school shooting at her alma mater Arapahoe High School in Denver.
The 20-year-old Carrie Diaries actress took to Twitter so send prayers to students and faculty affected by the tragic incident.
"Please #pray for #ArapahoeHigh- don't know exactly what is going on there with the shooter but Lord keep the kids and faculty safe," Robb initially tweeted.
"Pray pray pray for #ArapahoeHigh," she continued, adding, "Stay safe #Warriors - can't believe this is happening."
"My heart hurts so much right now for my alma mater #ArapahoeHighSchool #Warriors always take care of each other," she followed up. "Let's get our #guns under control #america. We need stricter laws. This is crazy #ArapahoeHighSchool."
Robb went on, "We need 2 b proactive abt caring 4 one another & being a friend 2 those who have none. Life is 2 fragile, 2 precious.#Arapahoe."
"Once a #warrior always a #warrior. Senior year spirit week 2012 #arapahoehighschool #prayforhealing," she concluded along with a photo from her high school days.
Today's shooting at Arapahoe left two students wounded. The teenage shooter, who entered the school armed and looking for one teacher, was found dead inside. Police believe the gunman died of a self-inflicted gunshot.