A domestic disturbance in Pierre  Part has  taken  the  life  of 26-year-old Heather Grenier. Her boyfriend and   assailant, 29-year-old Henry Walker Jr. of Sicily  Island, was transported to a Baton Rouge Hospital suffering from self inflicted gunshot wounds. He  later  died of his injuries. Assumption Parish Sheriff Mike Waguespack says their first concern was a report that there was a 7-month-old infant also involved in the incident. He says they found the child still in his mother's arms.