Authorities charged 34-year-old officer Jaselyn Grant on Wednesday in the death of 29-year-old Keara Crowder. Police say Grant was also charged with attempted murder because she tried to shoot Crowder’s 12-year-old son.

Defense attorney Dewun Settle said after Grant’s arraignment on Thursday that his client “was defending herself.”

Police said the shooting occurred during a domestic argument at the home where the women lived. Investigators said in an affidavit that Grant’s claim of self-defense did not “corroborate other witness statements or the crime scene.”

Memphis police said Grant has been relieved of duty pending the investigation’s outcome.