Littleton Public Schools in Colorado went into lockdown after a shooting at Arapahoe High School in town of Centennial, south of Denver. The school is part of the Littleton public school system and is also about eight miles from Columbine High School, the site of a 1999 school shooting that left twelve people dead and injured 23 others. Centennial, like Littleton and Aurora, the site of the deadly movie theater shooting in 2012), are suburbs of Denver.

At a press briefing following the shooting, Arapahoe County Sheriff Grayson Robinson said that the suspected gunman was found dead, apparently of a self-inflicted gunshot wound. He was a student at the school. Officials aren't identifying the gunman at this time. The shooter had expressed a desire to "confront" a particular teacher at the school, who was evacuated safely. Two students were found injured following the shooting. One victim had a "minor" wound that might not have been a gunshot wound. A second student was hospitalized in serious condition. 

Tomorrow is the first anniversary of the deadly Newtown elementary school shooting. Connecticut Senator Chris Murphy tweeted the following as he headed home for the grim anniversary of the massacre in his home state. 

Arapahoe High School is being evacuated as officials continue to search the building.