A Catholic bishop was shot and killed in his Los Angeles home over the weekend, in an incident police are calling 'suspicious.' It remains unclear whether a firearm was found at the scene, and authorities have not yet ruled O'Connell's death a homicide. And the US Conference of Catholic Bishops tweeted: 'We join @ArchbishopGomez in grieving the sudden loss of one of our bishops. 'Bishop O'Connell was an active member of our conference, and a champion of the poor and marginalized.' And at a national level, O'Connell was the chairman of the Subcommittee on the Catholic Campaign for Human Development of the US Conference of Catholic Bishops.