Columbia University student Mahmoud Khalil is being held in an immigration detention facility in Louisiana more than a thousand miles away from where the 30-year-old was arrested in New York in early March. Here’s what to know about the Central Louisiana ICE Processing Center, where he’s being detained while he fights to stay in the U.S.

Detained Columbia University student Mahmoud Khalil remains in ICE custody despite his green card status. Khalil is appearing before a judge today. This comes as Secretary of State Marco Rubio says 300 student visas have been revoked.

Lawyers for Mahmoud Khalil, a Columbia University graduate student facing deportation for his role in pro-Palestinian campus protests, appeared before a judge in New Jersey to debate where Khalil’s fight to be released from federal custody should play out.