Ketanji Brown Jackson sworn in as first Black female supreme court justice

She joins three women, Justices Sotomayor, Kagan and Coney Barrett - the first time four women will serve together

Nearly three months after she won confirmation to the supreme court, Ketanji Brown Jackson was sworn in as the court's 116th justice on Thursday as the man she is replacing, Justice Stephen Breyer, retired.

In a brief ceremony at the supreme court, Chief Justice Roberts administered the constitutional oath. Justice Breyer, who retired at noon, delivered the judicial oath. She is the court's 116th justice.