Organizers of the Great Ethiopia Run, a yearly 10-kilometer foot race, say the Ethiopian government has asked them to postpone the event for unspecified security reasons.

In a statement Thursday, the organizers say race organizer Haile Gebrselassie was informed of the request on Monday. The statement says the decision to postpone was finalized Wednesday in a meeting between Gebrselassie and Ethiopia's vice prime minister.

Gebrselassie has expressed profound disappointment at the decision.

The race, now set for November 25, was originally scheduled to be run on September 9 as part of celebrations marking the Ethiopian millennium.

Organizers say more than 30,000 participants from all over the world had registered for the run.

Ethiopia rings in its third millennium on September 12. The country follows the Coptic calendar, which runs about seven years behind the more common Gregorian.

The Great Ethiopia Run was started in 2001 as a fundraiser and as an opportunity for Ethiopians to take part in what is considered to be the national sport.

Some information for this report provided by AP.