Alex Youshock, 19, pleaded no contest on Friday -- that's the equivalent of guilty -- to the attempted murder of a security guard at whom he threw a lit pipe bomb in the attack.
Youshock also pled no contest to six new felony counts of possessing a bomb on school grounds.
The jury that convicted him before had deadlocked on his sanity. If Youshock ever recovers his sanity, Youshock will have to serve 25 years in prison.
