JACKSONVILLE, Fla. (CBSMiami/AP) — A 20-year old man from Florida has pleaded guilty on charges of federal terrorism.

According to authorities, he conspired to aid al-Qaida and traveled to the Middle East to join terrorist groups.

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The U.S. Attorney’s Office in Jacksonville reports that Shelton Thomas Bell pleaded guilty Wednesday to conspiracy to provide material support to terrorists and attempting to provide material support to terrorists. He faces up to 30 years in prison.

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Authorities say Bell planned to join Ansar Al-Sharia, which is an alias for al-Qaida. The group has taken responsibility for attacks on Yemeni forces, including a suicide bombing during a parade in May 2012. That attack killed more than 100 Yemeni soldiers.

Investigators say Bell participated in physical, firearm and other training in Florida to prepare for armed conflict.

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