Hacker who exposed Hillary Clinton's email server pleads guilty

U.S. Democratic presidential candidate Hillary Clinton speaks at the University of California Riverside in Riverside, California, U.S. May 24, 2016. REUTERS/Lucy Nicholson

WASHINGTON (Reuters) - A Romanian computer hacker who revealed the existence of a private email server used by Hillary Clinton when she was secretary of state pleaded guilty to hacking-related offences on Wednesday, the U.S. Justice Department said.

Marcel Lazar, who used the alias "Guccifer," entered his guilty plea before Judge James Cacheris in U.S. District Court, Alexandria, Virginia, the department said in a statement. Sentencing was set for Sept. 1.