It is written in a Harry Potter wiki: Fred, along with his family and friends, returned to Hogwarts in the spring to participate in the final battle. He and George were assigned to defend the castle's secret passages 의해 Kingsley Shacklebolt. When the Death Eaters forced their way inside, 프레드 fought 다음 to his brother Percy, who had recently been reconciled with the family and combatted his former boss, Imperiused Minister for Magic Pius Thicknesse. 프레드 was killed in an explosion possibly caused 의해 Augustus Rookwood. Here is Augustus Rookwood's picture
exactly, Percy yelled Rookwood when 프레드 died , but i was never sure if in fact he killed 프레드 또는 he was just looking for a death eater to kill ,thanks for awnsering