Following is a timeline of the Richmond High School gang-rape case involving a 16-year-old girl who was attacked outside a homecoming dance on Oct. 24, 2009:

Oct. 24, 2009: A 16-year-old sophomore girl at Richmond High School leaves a homecoming dance and begins drinking with a group of males in a dark campus courtyard. Authorities say she is robbed, beaten, raped and otherwise sexually abused for more than two hours before officers learn of the assault. Police make arrests over the next several days.

October and November 2009: Elvis Josue Torrentes, 21, Manuel Ortega, 19, Jose Carlos Montano, 18, Marcelles Peter, 17, Ari Morales, 16, and Cody Ray Smith, 15, are charged with participating in the attack. The minors are charged as adults.

Nov. 17, 2009: The Richmond City Council honors 18-year-old Richmond resident Margarita Vargas for placing the 911 call that put an end to the attack. The attack spanned more than two hours before Vargas heard what was happening from her brother-in-law, who heard himself from a passer-by in the neighborhood.

Dec. 1, 2009: Six defendants charged in the Richmond High gang rape plead not guilty.

January 2010: Police announce a warrant for 43-year-old Richmond resident John Crane Jr., whose DNA is matched to DNA recovered from the victim's body, authorities said.

Feb. 3, 2010: Crane pleads not guilty to gang-rape charges.

Nov. 15, 2010: Preliminary hearing begins for seven men and boys charged in the Richmond High gang rape.

Dec. 21, 2010: A 20-day preliminary hearing for seven men and boys concludes. Judge Gregory Caskey dismisses all charges against 16-year-old Cody Ray Smith, saying he did not find sufficient evidence of criminal behavior by the boy. Charges for defendant Elvis Torrentes are reduced, and the other five defendants are ordered to trial as charged. Defendant John Crane's charges are later reduced to rape by Judge Barbara Zuniga.

January 2011: The West Contra Costa Unified School District announces that it will pay $4 million to the victim of the on-campus gang rape, thereby settling a civil claim.

Sept. 6, 2012: Manuel Ortega, the most heavily charged defendant in the case, takes a plea deal. The 22-year-old Richmond resident pleads guilty to rape in concert, rape by a foreign object in concert, forced oral copulation in concert resulting in great bodily injury and robbery.

Oct. 19, 2012: Ortega is sentenced to 32 years in state prison for his role in the gang rape.

Nov. 16, 2012: Ari Morales, 20, of San Pablo, accepts a deal from prosecutors and pleads guilty to rape by a foreign object in concert and no contest to rape in concert and forcible oral copulation in concert.

Jan. 11: Morales is sentenced to 27 years in state prison for his role in the gang rape.

Jan. 28: The trial of Jose Montano, 22, and Marcelles Peter, 20, begins with legal motions.

February: Attorneys begin picking jurors from a pool of about 900 Contra Costa County residents.

May: Attorneys finish picking jurors for the dual jury trial of Peter and Montano.

June 3 and 4: Attorneys give opening statements at the dual jury trial for Peter and Montano.

June 17: The victim in the Richmond High gang rape testifies for the first time in the case.

July 10 and 11: Attorneys give closing arguments at the dual trial for Peter and Montano after six weeks and about 30 witnesses.

July 15: Juries for Peter and Montano begin deliberating.

July 16: Peter's jury reaches a verdict after about seven hours of deliberations. The verdict is sealed.

July 17: Montano's jury reaches a verdict after about 11 hours of deliberations. The verdict is sealed.

July 18: Verdicts are read, and Montano and Peter are each found guilty of rape in concert, oral copulation in concert and sexual penetration in concert. The juries find true for both defendants that great bodily injury was inflicted on the victim.

Aug. 15: Montano and Peter are scheduled to be sentenced in Martinez by Judge Barbara Zuniga. They face up to 33 years to life.