Bloch was last seen in the 2200 block of Houma Boulevard in Metairie, Louisiana at 9:45 p.m. on September 26, 2007. He was driving a silver 1995 Volvo 850 with Lousiana license plates numbered NTJ 453 at the time of his disappearance. He has never been heard from again. Bloch was reported missing on November 2 by a case worker at Responsibility House, a housing program for people who have mental illness issues or substance abuse problems. He had been estranged from his family for years.

In December 2007, the Jefferson Parish Sheriff's Office arrested one of their own former officers, Mark Hebert, and charged him with burglarizing the vehicle of a man he had arrested for drunk driving. A photograph of Hebert is posted below this case summary. He was fired from the sheriff's office on November 24, about a week before his arrest. He allegedly stole the person's wallet and used his credit card to buy $4,000 worth of items from a Home Depot store. Authorities believe Hebert was involved in other vehicle burglaries as well.

Bloch was in a car wreck on August 2, 2007 and hospitalized for minor injuries. Hebert responded at the scene of the accident. While Bloch was in the hospital, someone used his credit card to purchase a global positioning system (GPS) device. The GPS system, as well as Bloch's driver's license, credit card and some of his blank checks, were found when sheriff's officials searched Hebert's home and vehicle after his arrest. Authorities stated Hebert and Bloch were acquainted and may have been friends. It is unclear whether Hebert was involved in Bloch's disappearance. He is cooperating with the investigation.

Bloch's case remains unsolved. He left behind a substantial bank account, all his furniture, and his vehicle. Investigators believe he may be deceased.

Above: Mark Hebert