SOUTHBRIDGE, Mass. (AP) — Officials say a nurse was stabbed by an emergency room patient at a Massachusetts hospital and suffered serious injuries.

Worcester County District Attorney Joseph Early Jr. says 24-year-old Conor O’Regan attacked the nurse at Harrington Hospital on Wednesday morning.

Hospital officials say O’Regan had been through the registration process and was being directed for care.

Early says O’Regan fled after the stabbing. Southbridge police apprehended him off-campus.

Authorities say the nurse was airlifted to UMass Medical Center. Early says she is in critical but stable condition.

Authorities say O’Regan is charged with assault with intent to murder and aggravated assault and battery with a dangerous weapon.

O’Regan will be arraigned Thursday in Dudley District Court. It couldn’t be determined Wednesday if he has been assigned a public defender.