Ethan Crumbley admiting his guilt to murder High School shooting

Ethan Crumbley, the teenager charged with killing four fellow students at Oxford High School in November and wounding six others and a teacher, pleaded guilty

In a packed courtroom filled with the victims' grieving families, Crumbley, 16, took responsibility for the murders of his classmates.

Tate Myre, 16, Madisyn Baldwin, 17,  Hana St. Juliana, 14, and Justin Shilling, 17, and the injuries he caused to seven others who were struck by his bullets.

Crumbley, who was 15 at the time of the killing, then admitted that he deliberately shot and killed the students with his 9 mm handgun . confirming what he wrote in his journal one day before the tragedy.

Crumbley, who now faces life in prison, pleaded guilty to all 24 counts with which he was charged, 

Including first-degree murder, terrorism causing death, homicide and assault with intent to murder.

Crumbley, who has been locked up since the mass killing 11 months ago, showed no emotion as he delivered his guilty plea.