A British government inquiry into the 1997 death of Princess Diana calls her death "a tragic accident" that did not involve any foul play.

A report on the three-year investigation released Thursday in London also says Diana was not pregnant when she died in a car crash in Paris.

London's former police chief John Stevens told reporters no attempt was made by investigators to hold back information.

He said he is satisfied there was no conspiracy to kill her or her companion, Dodi al-Fayed.

Diana's death unleashed a series of conspiracy theories that British agents or the royal family had plotted the death because Diana's relationship with Fayed was embarrassing the royal household.

The two died after their chauffeur-driven luxury car crashed in a tunnel in Paris in August of 1997. At the time, they were trying to elude photographers who were giving chase.

The report blamed the crash on Dodi's driver, Henri Paul, who also was killed. It says he was drunk and driving too fast.

An earlier probe by French authorities also blamed Paul, saying he was intoxicated and impaired by drugs.

British news media say that Princess Diana's sons, Princes William and Harry, were briefed on the report's findings before their official release.

Fayed's father, Mohamed al-Fayed, claimed that Diana was pregnant with his son's child and was killed by British intelligence to prevent her from embarrassing the royal family.

Some information for this report was provided by AFP, AP and Reuters.