CHICAGO (AP) — Authorities are searching for a man who disappeared from federal court in Chicago after a judge ordered he be taken into custody.

Officials are trying to piece together exactly how 32-year-old Ignacio Torres of Chicago walked out of the courthouse Tuesday.

U.S. Attorney’s Office spokesman Randall Samborn says there was “some uncertainty about when and how” Torres was to report to the U.S. Marshal’s Service but he was supposed to turn himself in Tuesday.

Prosecutors asked a judge to have Torres taken into custody, alleging Torres threatened to kill a witness in his drug case.

Samborn says Torres was to be sentenced on a federal cocaine charge next month.

Marshal’s Service spokeswoman Belkis Cantor says a warrant has been issued for Torres and the office continues to search for him.

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