<sod >Multiple people have beenÃÂÃÂ injured in a shooting at Great Mills High School in southeast Maryland, the StÃÂÃÂ MaryÃÂ¢ÃÂÃÂs County sheriffÃÂ¢ÃÂÃÂs office confirmed.< eod>< sod > Three people have been injured, including the shooter, in a gun attackÃÂÃÂ at Great Mills High School in southeast Maryland, local media has reported.< eod>