Allegations of witness tampering in the federal Feeding Our Future trial rocked the courtroom Tuesday, leading to new security measures and a new investigation into the role one of the defendants may have played in the incident.

Assistant U.S. Attorney Thompson told the judge that he received information that a cooperating witness was approached in the hallway.

Feeding Our Future defendant Salim Said’s relative allegedly invited witness Sharmake Jama into a bathroom before his testimony.

Abdinasir Abshir, who’s scheduled to face trial in April, approached witness Sharmake Jama in a courthouse hallway while testimony was underway.