1 Enoch 10:4
4 And the Lord also said to Raphael: 'Bind Azâzal hand and foot, and cast him into the darkness: make a hole in the desert in Dûdâel, and throw him in. 5 Place upon him rough and jagged rocks, cover him with darkness, and let him remain there forever, and cover his face so he may not see light. 6 On the day of great judgment he shall be thrown into the fire. And restore the earth which the angels have corrupted, and announce the restoration of the earth, so that the plague may be healed, and all the children of men may not perish due to the secrets that the Watchers have revealed and taught their children.' 8 The entire earth has been corrupted by the deeds taught by Azâzal: attribute all sin to him.'
Jubilees 5:6
5 He was pleased with Noah alone. 6 Against his angels whom he had sent to the earth he was angry enough to uproot them from all their (positions of) authority. He told us to tie them up in the depths of the earth; now they are tied within them and are alone. 7 Regarding their children there went out from his presence an order to strike them with the sword and to remove them from beneath the sky.
Notes and References
"... An extensive body of Second Temple literature developed elaborate scenarios concerning these rebellious angels. Variously referred to as “spirits,” “sons of heaven,” “giants,” and “watchers,” these supernatural beings were judged in Noah's flood and were thought to be imprisoned until the time of their final judgment (1 Enoch 10:11–12; Jubilees 5:6). In this interpretation, Christ “proclaimed” judgment upon the sons of God after achieving his victory on the cross. ..."
Gregg, Brian Han "1 Peter" in Aune, David Edward, (ed.) The Blackwell Companion to the New Testament (p. 591) Wiley-Blackwell, 2010