Three African refugees have pleaded not guilty to charges stemming from what police said was a fake bomb found at Phoenix's airport as new details emerged about the case.

Luwiza Daman, Shullu Gorado and Asa Shani pleaded not guilty in federal court in downtown Phoenix on Friday to a felony charge of causing what appeared to be an explosive device to go through a security checkpoint at a hearing.

All three are from Eritrea, a country on the Red Sea in the Horn of Africa.

Authorities say Daman was carrying the suspicious item in her bag on Aug. 5 as she went through security at Sky Harbor intending to board a plane to Des Moines, Iowa. Police say Gorado and Shani gave it to her.


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