A SWAT team stormed the Bay County Jail on Monday to end an 11-hour hostage standoff, injuring a hostage and at least two inmates, authorities said. Three other employees were freed.

An inmate reportedly said he was upset about health hazards at the jail.

The injured hostage was a nurse who was accidentally shot twice by the SWAT team, said Bay County sheriff's office spokeswoman Ruth Sasser. The woman was in stable condition after surgery.

Sasser said two other inmates who were part of the hostage-taking were also shot. They were treated and returned to the jail. Another inmate was taken to the hospital for a drug overdose; his connection to the incident was not immediately determined.

The standoff began Sunday night, when the SWAT team and armed corrections officer surrounded the jail. The officers freed the hostages Monday morning from the third floor, where inmates had barricaded themselves, Sasser said.

Sheriff Frank McKeithen had gone to the site Sunday night to negotiate an end to the standoff.

Jennifer Elmore, an anchor at WJHG-TV, said she received a call Sunday night from a man who said he was holding hostages and was upset about health hazards at the jail.

A private company, Corrections Corporation of America, based in Nashville, operates the jail under contract with Bay County.