ijudge ruled that documents from a child welfare investigation about him should be unsealed.olas cruz avoided eye contact during this afternoon's hearing, silently staring down. it was his second time in court since last wednesday's shooting. ( gunfire ) and more missed warning signs have emerged. newly released documents reveal that in september 2016, an investigator with florida's department of children and f chlies, visited the cruz household after allegations of medical neglect. the investigator noted cruz had depression, a.d.h.d., and autism, that he cut his arms in a snapchat post, and that he plans to go out and buy a gun. d.c.f. closed the investigation six weeks later, saying the agency found no evidence of mistreatment. so this wasn't the person that we knew, not at all. k reporter: james and kimberly snead, who took cruz in after his mother's death in november, told abc news they saw no signs. >> everything everybody seems to know, we didn't know. we had rules, and he followed every rule to the "t." >> reporter: stoneman douglas high school students have gone from