President Trump announced Jeff Sessions resignation on twitter, Wednesday:
We are pleased to announce that Matthew G. Whitaker, Chief of Staff to Attorney General Jeff Sessions at the Department of Justice, will become our new Acting Attorney General of the United States. He will serve our Country well....— Donald J. Trump (@realDonaldTrump) November 7, 2018
CBS News reports:
President Trump tweeted Wednesday afternoon that Attorney General Jeff Sessions has resigned. Matthew G. Whitaker, Sessions' chief of staff, will become acting attorney general.
"At your request, I am submitting my resignation," Sessions wrote to the president Wednesday.