Mother arrested after 2-year-old boy dies in Placentia, police sayA mother has been arrested after her 2-year-old son died while she was giving him a bath in Placentia. A mother has been arrested after her 2-year-old son died while she was giving him a bath in Placentia. A mother has been arrested after her 2-year-old son died while she was giving him a bath in Placentia. A mother has been arrested after her 2-year-old son died while she was giving him a bath in Placentia. PLACENTIA, Calif. (KABC) -- A mother has been arrested after her 2-year-old son died while she was giving him a bath in Placentia.