The US Supreme Court has called on President Barack Obama's administration for its opinion on whether victims of the September 11, 2001 attack on New York could pursue claims against banks accused of indirectly helping those behind it.
The call for the White House's opinion came on Monday and once the Obama administration files a brief in the case, the court will decide whether or not to hear it.
Victims, including nearly 3,000 family members of people who died in the 2001 attacks, launched an appeal after the 2nd US Circuit Court of Appeals ruled that banks accused of indirectly helping armed groups, could be dismissed.
The bank defendants dismissed by the ruling include Al Rajhi Bank, Dar Al-Maal Al-Islami Trust, Dallah Al Baraka Group LLC and Saudi American Bank, now known as Samba Financial group.
The appeals court said allegations against the banks over "material support for terrorism" could proceed if there was a more direct relationship between each bank and a specific violent act.
The Supreme Court case is only one aspect of the multi-district litigation filed by victims against various defendants.
The attacks were orchestrated by Osama bin Laden under the auspices of the al-Qaeda armed group. The US military killed bin Laden in Pakistan in 2011.