What was the altercation that Adam Lanza had with 4 school staff on Thursday and one day later he shoots three of these people dead.

Who was the fourth who was not at school on Friday?

17.10 (12.10) NBC are reporting that there was allegedly an altercation between Lanza and staff at Sandy Hook Elementary School the day before the shooting.

Officials say Lanza was involved in an argument at the school which involved himself and four other staff members. Of the four, three were murdered in the shooting spree while the fourth was not at school yesterday and is now being interviewed by federal and state investigators.


[link to www.telegraph.co.uk]