U.S. prosecutors say a man charged with supporting al-Qaida and plotting to kill President Bush should be kept in jail until his trial.
Attorneys filed their motion ahead of a detention hearing next week for 23-year-old Ahmed Omar Abu Ali.
Lead prosecutor Paul McNulty says the defendant, an American citizen, poses a "grave danger" to the nation.
The indictment against Mr. Abu Ali says he planned to kill Mr. Bush either by shooting him or detonating a car bomb. It says the defendant discussed the plot with several co-conspirators in Saudi Arabia.
Saudi authorities arrested Mr. Abu Ali in June 2003 and held him for 20 months before returning him to U.S. custody this week.
Mr. Abu Ali's family says he was tortured while in Saudi custody. His attorney says he will plead not guilty to the charges.
Some information for this report provided by Reuters.
