[Update 11:06 p.m. ET] President Obama will select Solicitor General Elena Kagan as the Supreme Court nominee to replace the retiring John Paul Stevens, a legal source close to the process told CNN Sunday evening.
The nomination is expected to be announced Monday at 11 a.m. ET, another source familiar with the process said.
Kagan, 50, a New York native, was widely reported to be the frontrunner for the nomination. She was a finalist for the high court vacancy last year when Justice Sonia Sotomayor was selected to replace the retiring David Souter.
Kagan would be the third woman on the nine-justice bench if confirmed.
[Posted 10:19 p.m. ET] NBC News is reporting President Obama will select Solicitor General Elena Kagan as the Supreme Court nominee to replace the retiring John Paul Stevens.
CNN is working to confirm the report.
Kagan is a former Harvard Law School dean and has never served as judge. As solicitor general, she is the Obama administration's top lawyer before the Supreme Court and has argued several high-profile cases before the justices since taking the job in spring 2009.
Kagan was a law clerk for Justice Thurgood Marshall and served as associate White House counsel in President Clinton's administration.
- CNN's John King and Bill Mears contributed to this report.