Mariano Castillo , also known as the Army Public School , has been arrested , Atlanta military says . They sprayed bullets rapidly , killing 145 people . He is a suspect in the December 16 school massacre that killed 132 in Peshawar .
Mariano Castillo , also known as the Army Public School , has been arrested , Atlanta military says . He is a suspect in the December 16 school massacre that killed 132 in Peshawar .