Her boyfriend was Jose Luis "Smiley" Saenz, a Fourth (cuatro in Spanish) Street Flats gang member. Killing was nothing new to Smiley. About one and one half years earlier Smiley was suspected in a gang murder, but was never arrested. Saenz brazenly boasted about his gang exploits and dared anyone to challenge him.
On July 25, 1998 Saenz and a 14-year-old accomplice, ambushed, shot, and killed two rival gang members from North Clarence Street. When Smiley Saenz returned to the Pico Aliso Village Projects, the home of the Cuatro Flats gang, word spread quickly about the ruthless murders. Cuatro gang members praised his violence and said that Saenz was mas loco (more crazy) than any other of the craziest vato locos in East L.A.
When his girlfriend Sigrieta heard about the heartless gang killings, she was not pleased. She liked to believe that the father of her son was a good man and that he wanted to leave gang life behind. Her mistake was to think that Smiley Saenz cared about her or her son. She expressed her displeasure to Smiley.
According to police reports, on Aug. 5, Smiley Saenz allegedly kidnapped Sigrieta from her Aliso Village apartment and took her to the East Los Angeles home of Saenz's grandmother. He raped her and then shot her to death. Some speculate that he feared that she knew too much about the murders and would report him to the LAPD's Hollenbeck division. For whatever reason, he also threatened to return and kill his own child.
Saenz was later alleged to have stood across the street from the Pico Aliso Village Project police station and taunted officers. Some of the gang members said that Smiley had actually fired shots at the station. He openly bragged that he would not be taken alive and would shoot any cop who tried to take him.