LITTLE ROCK — A defamation trial involving the state treasurer and one of his top staffers was interrupted Thursday morning when one of the defendants reported experiencing chest pains.

Paramedics carried Jim Harris, chief of staff for state Treasurer Dennis Milligan, out of the federal courthouse in Little Rock on a stretcher and transported him from the scene in an ambulance at about 10:40 a.m. The paramedics said they were taking Harris to Baptist Health Medical Center in Little Rock.

U.S. District Judge Brian Miller said the trial would be in recess until 9 a.m. Friday.

David Singer, who was fired as outreach manager for Milligan in April 2015, has alleged in a lawsuit that Harris defamed him by saying in an office email that he believed Singer had mental problems and later taking steps to ensure that reporters obtained the email.

The suit also alleges that Milligan discriminated against Singer based on a perceived disability.

The trial began Monday and had been expected to end Friday.