Adel Daoud

Adel Daoud, 18, is charged with plotting to bomb a downtown bar. (Credit: CBS)

CHICAGO (CBS) — A suburban Chicago teenager pleaded not guilty on Friday on charges that he tried to have an undercover FBI agent killed.

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Adel Daoud appeared in Chicago federal court a week after prosecutors announced the charges, including solicitation of murder.

Daoud is already facing terrorism charges in what prosecutors describe as an attempt to bomb a downtown bar.

Investigators say that while behind bars, Daoud tried to arrange to kill an agent who prosecutors say played a role in the sting that led to his 2012 arrest in the bomb plot.

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He’s been in jail since then for trying to ignite what he thought was a car bomb outside the bar.

An agent posed as a terrorist from New York offered to supply Daoud with a bomb.

When Daoud, of Hillside, pressed a button that he believed would detonate the bomb outside Cal’s and the Cactus Bar and Grill in the South Loop in September 2012, he was arrested, prosecutors say.

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He has pleaded not guilty in that case.