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A 52-year-old man was convicted Wednesday of fatally stabbing a teacher, who was also the grandmother of his children, at a park in Long Beach in front of her students.

Steven Dwayne Brown was found guilty of first-degree murder in the 2013 slaying of Kellye Lynnette Taylor, according to a release from the Los Angeles County District Attorney’s Office.

At the time of her death, Taylor, 53, was working as teacher at Huntington Academy, a private elementary school in Long Beach.

Taylor and two other teachers took their students to Orizaba Park on Oct. 11, 2013, to play at the playground, the release stated.

As Taylor was watching the children, Brown walked up behind her and slit her throat, Deputy DA Diana Martinez said.

Another teacher went to her aid as Brown ran away. Taylor later died of her injuries.

Brown was allegedly in a relationship with Taylor’s daughter, according to the DA’s office.

Earlier in the year, Kellye Taylor was granted legal custody of the couple’s three children after the pair were arrested in separate incidences, the Los Angeles Times reported.

Brown sued Long Beach police, the Los Angeles County Department of Children and Family Services and several social workers, claiming Taylor had told authorities he abused his children, the newspaper reported.

Brown had four prior felony convictions between 1986 and 1998 in L.A. County, including residential burglary, robbery and possession of a controlled substance, according to the criminal complaint, the DA’s office stated.

Brown was scheduled to be sentenced March 4 when he faces a possible maximum sentence of 86 years to life in state prison.

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