Police say an inmate being taken for treatment at a specialty hospital in Boston has shot a deputy sheriff after a struggle over the officer's gun. Another office then fired at the prisoner, critically wounding him.

Boston Police Commissioner Ed Davis said two deputy sheriffs from Middlesex County had taken the inmate to Massachusetts Eye and Ear Infirmary on Wednesday.

Davis said as the officers removed the inmate's handcuffs, he began to struggle with them and snatched a gun from one officer. Davis says the inmate shot one deputy sheriff in the leg.

The other deputy sheriff fired his weapon, striking the inmate in the chest. The deputy is in stable condition with non-life-threatening injuries. The hospital focuses on the disorders of the eye, ear, nose, throat, head and neck.