User blog comment:JediSpectre117/Council not helping in ME3/@comment-1221773-20110925175301/@comment-2008379-20110927200451

@Shep fan

''The Reapers can use the Citadel to control mass relays remotely. When they attacked the Protheans, the Reapers used the mass relay network isolate star systems and systematically wipe the Protheans out before they even knew what happened.