MIAMI (AP) — State correction officials vowed Wednesday to make prisons safer by improving transparency and beefing up investigations following criticism for the handling of inmate deaths.

“Stories report we have fallen short in specific instances with regard to facility leadership, safety, security, training and services for mentally ill inmates. We’re fixing the problems that have been identified and as we identify new issues, we will fix those too,” Department of Corrections Secretary Mike Crews said during a press conference at a Miami prison.