(CNN) A man with autism, who was sitting next to his unarmed caregiver when police shot the latter in Florida, is so traumatized by the incident, he's not eating or sleeping, his family says. Arnaldo Eliud Rios Soto, 26, wandered away from his group home in North Miami last week -- and became the latest image of the national debate about police shootings of unarmed men. Charles Kinsey, his behavior therapist, was trying to help him Monday when police responded to a 911 call about a suicidal man with a gun. A cell phone video released later showed Kinsey lying on the ground, his hands up in the air, while Rios sat nearby.