Dyson Allen, a 19-year-old U.K. man, was sentenced to life in prison with a minimum sentence of nine years and three months for killing four siblings in a fire.
Sky News, which broke the story, said the verdict was handed down on Friday.
Allen, an arsonist, had started fired previously, according to ITV News.
He never gave any reason why he torched clothes in his family’s Lancashire home. He was convicted of manslaughter.
Allen was crying in court as he was led back to his cell.