Diana Crash Investigation Hits Snag

The investigation into the auto crash that killed Diana, Princess of Wales, ran into a stumbling block when the lone survivor said he can't remember anything about it.

Investigators had hoped that Trevor Rees-Jones, who regained consciousness and was fully alert this week, would be able to shed light on two keys points: the condition of driver Henri Paul and the actions of photographers who were reportedly chasing the vehicle in which Diana, Dodi Fayed and Paul died.

But ABC News reports from France now say that Rees-Jones can remember nothing after the Mercedes left the Ritz Hotel.

Meanwhile, CNN reported that parts of a second car were found at the scene of the August 31 crash. The items -- pieces of a tail light and traces of paint -- do not match the Mercedes, leading to further speculation that photographers reportedly chasing the vehicle may have been responsible for the crash.

Since it was learned that the driver of the Mercedes, Henri Paul, was legally drunk and taking Prozac at the time of the crash, the news media has focused on Paul's last day of drinking, although the official investigation has continued to look into the actions of nine photographers who were at the scene.

The bodyguard, Trevor Rees-Jones, was expected to shed light on the events leading up to the crash. Although he now claims that he doesn't remember anything after leaving the hotel, a French magistrate plans to question Rees-Jones at the Paris hospital this week regardless.

Doctors told ABC News that it would not be unusual for Rees-Jones to suffer amnesia about what happened at the time of the accident. Victims often black out memories of what happened around the time of a trauma, and heavy doses of anesthesia can also impede memory.

Rees-Jones, 29, was anesthetized during the surgery following the crash. Though protected by an airbag and seatbelt, he suffered heavy facial and chest injuries.

He remembers leaving the Ritz Hotel in Paris with Diana and her companion, Dodi Al Fayed, but doesn't remember the crash minutes later in a traffic tunnel, sources at the hospital where Rees-Jones is recuperating said.

ABC News also learned that Rees-Jones' parents told him a few days ago -- after he regained consciousness -- that Diana and Al Fayed had died in the crash.

Rees-Jones, of Whittington, England, is a one-time British paratrooper who served in the Middle East and Northern Ireland before leaving the army in 1992.

Second Car Involved?

Parts of a second car were found at the scene of the crash that killed Princess Diana, sources close to the investigation told CNN. The items -- pieces of a tail light and traces of paint -- do not match the Mercedes that carried Diana and three other people in the August 31 crash.

Scientists working with investigators have determined that the tail light pieces are from a Fiat car, but they have not determined the year or model.

According to CNN's crash investigation sources:

• Pieces of the Mercedes' right headlight were found in the same place as the pieces of the Fiat tail light, several dozen yards behind where the Mercedes struck a pillar in the tunnel.
• Traces of paint not used in Mercedes cars also were found on a side-view mirror of the Mercedes.
• The debris does not necessarily indicate a direct connection between the Fiat and the crash because the items found from the second car could have been in the tunnel before the accident.

A photographer under investigation in the crash, Serge Arnal, was driving a Fiat on the night of the accident, but investigators already have examined his car and found it did not come in contact with the Mercedes, according to an MSNBC report.

The Diana Crash Investigation

Bar-Hopping Driver?
The man who drove Princess Diana to her death may have started bar-hopping at 4 o'clock that afternoon.

Hotel to Face Charges?
French authorities may be considering filing charges against the Paris Ritz Hotel while Henri Paul's former employers continue to try to distance themselves from responsibility.

Blood Alcohol Content
The latest blood test shows that Paul was not only drunk, he was also taking an antidepressant drug and may have stopped taking one prescribed for alcohol abuse.

Antidepressants and Alcohol
Diane Hunter examines the potency of this very dangerous "cocktail."

Conflicting Reports
In the early stages of the investigation, conflicting reports and finger-pointing dominated.

How Drunk Was He?
A study of just what it means to have a .175 blood alcohol content and try to drive.