The hospital that treats Minnesota's most dangerous mental patients is nearly devoid of experienced psychiatric staff. Half a dozen psychiatrists have quit recently -- apparently in response to the combative style of the hospital's new administrator. The state will investigate allegations of a hostile work environment.

Gov. Mark Dayton toured the hospital that treats some of the state's most dangerous mental patients. He reiterated his call for $40 million in improvements to the facility. He did not discuss claims that the administrator's combative style triggered an exodus of psychiatrists.

Officials confirm to MPR a patient at the Minnesota Security Hospital in St. Peter died this week. They aren't releasing any additional information. The death comes the same week that embattled chief David Proffitt stepped down under pressure.

Minnesota Public Radio reports that OSHA inspectors made an unannounced visit to the Minnesota Security Hospital in St. Peter on March 13 after concerns about worker safety. The hospital -- which houses 400 adults deemed mentally ill and dangerous -- has been in turmoil for months.

A state official tells lawmakers that metal handcuffs and seclusion are being phased out at the state hospital. The hospital was fined last year for maltreatment of patients.

The Department of Human Services asked David Proffitt to step down Tuesday morning. He was hired for the job in St. Peter just seven months ago. In December, the state agency began an investigation following accusations he created a hostile work environment. Proffitt will help with the transition to new leadership.

Employee injuries at the state's largest facility for the mentally ill and dangerous, located in St. Peter, increased sharply this year, MPR reports. The number of permanent psychiatrists dropped from six to one and security practices have put counselors into closer contact with patients.