SUPERIOR, Ariz. (AP) — The Latest on the deaths of two young children (all times local): 10:20 a.m. Arizona authorities say the mother of a baby and a toddler found dead in car seats has been has been arrested on suspicion of first-degree murder. The Pinal County Sheriff's Office in a statement identified the mother as Brittany Velasquez.Authorities did not immediately provide information on how the 2-year-old boy and 10-month-old girl died and said that autopsies are being conducted. The sheriff's office said Tuesday that the bodies of the children were found late Monday night inside a vehicle at a home in Superior, a small town east of Phoenix.