Oklahoma police have arrested the caretaker of a 4-year-old girl who was reported missing after a postal carrier found her sister wandering alone outside on Tuesday, authorities said. Local authorities began searching for Athena Brownfield Tuesday afternoon, when the postal worker discovered her 5-year-old sister near the children’s home in Cyril and notified police, according to the Oklahoma State Bureau of Investigation, which is also involved in the search. Oklahoma State Bureau of Investigation