Completely naked before the 4 men, who were kneeling in front of her, the ordeal lasted for 10 minutes. Maggie was asked thrice to turn around. Jose entered the room and undressed himself. He pushed her backward and pinned her down on the bed. Twice, when she went into a state of shock, her attackers poured water on her face and slapped her to revive her. After the gang finished the rape, at 6 a.m. they put her in a taxi, in front of the Free Press Building near Epifanio de los Santos Avenue and Channel 5.
At home, her mother, her brother-in-law Ben Suba, and several PC officers, policemen and reporters, were present, and she said: "Mommy, Mommy, I have been raped. All four of them raped me."
On June 29, 1967, dela Riva, with her lawyer, Atty. Regina O. Benitez, filed a complaint with the Quezon City Police Department Headquarters, and submitted to an internal medical examination by Dr. Ernesto Brion, NBI Chief Medico-Legal Officer. --Wiki