Riyadh has asked a U.S. judge to dismiss 25 lawsuits alleging that it helped plan the September 11 terrorist attacks.

In a filing to the U.S. District Court in Manhattan on Tuesday, Saudi Arabia said that the plaintiffs could still not prove that any Saudi official or agent planned or carried out the attacks.

“Neither proper allegations nor any evidence support plaintiffs' conclusory assertions that Saudi Arabia caused the 9/11 attacks by knowingly or even recklessly aiding the terrorists who committed them,” the kingdom said.

However, fifteen of the 19 Al-Qaeda hijackers who carried out the 9/11 terrorist attacks were Saudi nationals. The attacks killed nearly 3,000 people.

The kingdom is being sued billions of dollars by families of the victims of the terrorist attacks.

“We have tons of allegations of what many Saudis and the country's alter ego charities did. Saudi Arabia cannot hide from the facts,” said James Kreindler, a lawyer representing the wrongful death claimants.

Back in 2015, a U.S. judge dismissed claims by the victims’ families, but last September the U.S. Congress voted to override a veto by then-President Barack Obama and allowed the claims to proceed.

Obama opposed the move, saying it would harm “U.S. interests” by opening up the United States to private lawsuits over its military missions abroad.