One of the suspects was arrested at the airport, on his way to Somalia, authorities said
Carson City Sheriff Ken Furlong said federal immigration authorities told his office that the 19 year old was in the country illegally
The incident was one of several high-profile cases in the Chicago area in recent years involving violent encounters between police officers and black men.
Regulators allege the company engaged in discriminatory practices that resulted in thousands of female, black and Asian employees being underpaid by more than $400 million.
Police said the body of a baby girl was discovered the night of Jan. 16 inside the women's restroom in the secured Amazon facility in southwest Phoenix.