§ Of the Flight of the Noldor The Silmarillion

But even as Nienna mourned, there came messengers from Formenos, and they were Noldor and bore new tidings of evil. For they told how a blind Darkness came northward, and in the midst walked some power for which there was no name, and the Darkness issued from it. But Melkor also was there, and he came to the house of Fëanor, and there he slew Finwë King of the Noldor before his doors, and spilled the first blood in the Blessed Realm; for Finwë alone had not fled from the horror of the Dark. And they told that Melkor had broken the stronghold of Formenos, and taken all the Jewels of the Noldor that were hoarded in that place; and the Silmarils were gone.