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.

Employees say problems at the hospital that treats dangerous mental patients have gotten worse under an administrator who started six months ago. They describe a tense and chaotic work environment that's led several psychiatrists to quit. A state official says the hospital is close to losing its license.

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.

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.