Tarrant County deputy medical examiner on leave after audit finds errors in dozens of death cases The audit included a review of 41 autopsies conducted by Dr. Marc Krouse. Tarrant County Medical Examiner's office in Fort Worth, Tex. (NBC5)(KXAS-TV (NBC5) / NBC5) Dr. Marc Krouse.(Courtesy / Digital File_EMAIL) The audit concluded that Dr. Marc Krouse had made errors in at least 27 homicide cases from Jan. 1 to Nov. 9 of 2020, according to the A letter sent to defense attorneys by the Tarrant County District Attorney’s Office said the audit was completed on March 19 by the county medical examiner, Dr. Nizam Peerwani.