ANKARA, June 11 (Reuters) - The team of the ousted leader of Turkey's main opposition, Ozgur Ozel, has resigned from the party's assembly, his office said on Thursday, adding the move should legally trigger an extraordinary congress to re-elect a chairman.

In a statement a day after the Republican People's Party's (CHP) court-appointed chairman asked for the expulsion of nine party assembly members loyal to Ozel, the ousted leader's office said 28 members from the 57-member assembly had resigned, thus amounting to the fall of the party assembly and legally mandating a congress within 45 days.

(Reporting by Ece Toksabay and Tuvan Gumrukcu; Editing by Jonathan Spicer)