UPDATE: Milwaukee police confirmed that both children were located and are safe.
Milwaukee police are asking for the public’s help finding a critically missing 4-year-old boy who they believe is with his 12-year-old sister, who may be armed.
Nevin M. Powell was last in contact with his guardian Tuesday night. Both he and his sister, Sanuya M. Wooten-Powell, were last seen walking southbound near the intersection of Dr. William Finlayson and West Hadley Street…