Evidence in a 9/11 lawsuit against the government of Saudi Arabia alleges the kingdom's embassy in Washington, DC may have funded a test run for the deadly attacks in 2001, according to a US newspaper report.
The evidence was submitted as part of a class action lawsuit against the government of Saudi Arabia, the New York Post reported on Saturday.
It alleges the embassy paid for two Saudi nationals to fly from Phoenix to Washington two years before planes hit the World Trade Center, the Pentagon, and slammed into a field in Pennsylvania as part of a "dry run" for the attacks.
Saudi Arabia has always denied any involvement in September 11, 2001 attacks that killed nearly 3,000 people.
The evidence could further reinforce the claim that employees and agents of Saudi Arabia directed and supported the hijackers.
Waleed Nassar, an international disputes attorney who represents two Saudi charities that are defendants in 9/11 litigation alongside Saudi Arabia, said "the evidence, along with much of what has been submitted, is innuendo and circumstantial".
"The plaintiff's burden is to show something more direct and that's really the only hope they have to have Saudi Arabia remain in the litigation," Nassar said. 
The story cites FBI documents in the complaint alleging Saudi students Mohammed al-Qudhaeein and Hamdan al-Shalawi were in fact members of "the Kingdom's network of agents in the US", and participated in the conspiracy.
During the flight in November 1999, the Saudis are reported to have attempted to get into the plane's cockpit to test security. The pilots made an emergency landing because of the incident and the men were interrogated by the FBI, which eventually let them go.