The Latest on a young Mississippi man who pleaded guilty to a terrorism-related charge after authorities said he and his fiancée tried to go to Syria to join the Islamic State (all times local):

2:40 p.m.

Court documents say the fiancee of a man who pleaded guilty to a terrorism charge is the mastermind behind the plan for the couple to go to Syria and join the Islamic State.

The documents were released Friday when Muhammad Dakhlalla pleaded guilty to providing material support to terrorism. Authorities say Dakhlalla and his fiancee, Jaelyn Delshaun Young, at one point thought about using their honeymoon as ruse to go to Syria.

The court documents say Young had already expressed an interest in converting to Islam even before she began dating Dakhlalla in late 2014.

Young was a sophomore at Mississippi State University. She was a chemistry major, former honor student, cheerleader and homecoming maid at Warren Central High School.

Her trial is set for June 6.

Dakhlalla faces up to 20 years in prison when he is sentenced. Both are jailed without bond.

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1:45 p.m.

A young Mississippi man pleaded guilty Friday to a terrorism charge, months after authorities say he and his fiancee were trying to go to Syria to join the Islamic State.

Muhammad Dakhlalla, 23, pleaded guilty to providing material support to terrorism and faces up to 20 years in prison, $250,000 fines and lifetime probation.

His fiancee, Jaelyn Delshaun Young, is also accused of attempting to join the Islamic State. Her trial is set for June 6.

The couple was arrested Aug. 8 before boarding a flight from Columbus, Mississippi, with tickets for Istanbul. Authorities say they contacted undercover federal agents last year, seeking online help in traveling to Syria. Both are jailed.

The couple's arrest last fall stunned their families. They were promising students. Dakhlalla is the youngest of three sons and was preparing to start graduate school at Mississippi State University. Young was also planning on going to college.