An Amber Alert was issued early Saturday morning for a teenage girl reportedly abducted in Waterloo.According to iowaamberalert.org, Shakiya Kay Baker, 15, was abducted at 12:19 a.m. Saturday by three black men armed with guns. The men were reportedly in a light green or white conversion van with a green stripe.Baker is described as 5 feet 2 inches tall and weighing 190 pounds.