The former king's first coup attempt began on March 26, 1921.
About 250 of the group's members are believed to be involved in the coup attempt.
The coup attempt seemed to take American officials by surprise.
As the morning passed, there was no sign of a coup attempt.
But those discussions were put on hold after the coup attempt last week.
There have been six coup attempts during his 14-year rule.
He said Washington was not promoting a second coup attempt.
He had already expanded some programs before the coup attempt.
The project was stopped because due to the coup attempt of 30 September 1965.
At least 53 people were killed and more than 100 wounded in the coup attempt.