Romero was suspected in the stabbing death of his 39-year-old wife, Olga Lidia Dominguez-Simon, on Wednesday in Oxnard. Romero's teenage daughter also was stabbed and she was taken to a hospital. Her name wasn't released.
A warrant had been issued for Romero, who police believed may have fled to Mexico. A Mexican voter registration card was found in his wallet.
"He was the only suspect in the homicide. The case is cleared," said Jim Seitz, a major crimes supervisor for the Oxnard Police Department.
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