Lawyers for the defendants in the Philadelphia Traffic Court trial Monday zeroed in on the FBI’s investigation into the alleged ticket-fixing scheme for being too narrowly focused.

The trial resumed in the U.S. District Court for the Eastern District of Pennsylvania after a weeklong recess. The trial, which picked up again with additional witness testimony and wiretap recordings, had been put on hold while presiding Judge Lawrence F. Stengel attended a conference in Washington, D.C.