The document that was published contains a summary of an interview the FBI held in 2015. The interview was held with a man who had contact with the Saudis in the USA who helped the aircraft makers into the country before the attacks.

Almost all names have been crossed out in the 16-page report, as well as other information that is still classified.

Saudi connections disputed

15 out of 19 of the terrorists were Saudis.

In 2004, the Eleventh September Commission concluded that there was no evidence of links between senior Saudi government officials and the terrorist attacks.

But there is a distrust of that conclusion among many relatives, who themselves wanted to read the secret investigative material.

According to the news agency Reuters, which read the first document, there is no evidence that high-ranking officials in the Saudi government are complicit in the attacks.

CNN writes that the report reveals that a Saudi student in the United States was investigated as an intelligence agent for Saudi Arabia and that he was very involved in helping the terrorists with travel arrangements, accommodation and financing.

Al Jazeera reports that the report confirms contacts between the hijackers and the Saudis in the United States, but does not offer any evidence that the Saudi government is involved.

Relatives believe there is evidence

9/11 Families United is an association for relatives of the victims of the attacks.

They write in a joint statement that they think the report contains new information involving the support of Saudi government officials and assistance to the terrorists when they arrived in the United States.

"The amount of contacts at critical moments between these Saudi government officials, al-Qaeda and the hijackers, is staggering."

writes 9/11 Families United.

The Saudi embassy in Washington supports the declassification of all archival documents, in order to stop the accusations against the country that they deny, reports Reuters.

Press Biden

President Biden signed the presidential order to publish material from the investigations this year, following pressure from relatives of the victims.

More material from the investigations is expected to be released to the public in the next six months.