A Louisiana immigration judge on Tuesday said she will decide by the end of this week whether to continue to hold Columbia University graduate Mahmoud Khalil in custody or release him.

An immigration judge in Louisiana says she will decide later this week whether the government can continue to detain Mahmoud Khalil.

Khalil's attorneys say the government's case against their client largely rests on a single letter from Secretary of State Marco Rubio alleging that Khalil participated in "antisemitic" and "disruptive activities.