"We never expected this could happen — never," Luz Garcia said. "It's so hard."
Olivas was Luz Garcia's mother-in-law before she divorced her husband, and the grandmother of their children.
Luz Garcia said her children have not left their home since hearing the news about the deaths of their grandmother, aunt and a cousin who loved soccer and played on a local team as a goalie. He was Elvira Garcia's only son.
One of his happiest moments, she said, was getting an autographed photograph of Tijuana's soccer team, which in December won the border city's first Mexican Apertura division football title.
"This is very painful for me," she said. "I'm sorry I can't talk more."
Blood reported from Los Angeles. Associated Press writer Tami Abdolla contributed from Los Angeles and Elliot Spagat contributed from San Diego.
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