NEW : A friend says ` ` something happened '' to Itzcoatl , after a military tour . NEW : He says the once fun - loving man became preoccupied and ` ` depressed '' The suspect 's father read a paper that his son , himself , was homeless . The suspect is accused of killing two homeless men in Southern California .
NEW : A friend says `` something happened '' to Itzcoatl Ocampo after a military tour . NEW : He says the once fun-loving man became preoccupied and `` depressed '' The suspect 's father tells a paper that his son , himself , was homeless . The son is accused of killing four homeless men in Southern California .