The US has designated five branches of a Saudi charity, Al Haramain Foundation, and its former leader Aqeel Abdulaziz Al-Aqil as terrorist financers for their links with Al Qaeda.
These designations "are part of our ongoing effort to cut off terrorist funding and to ensure that charitable funds are not diverted to individuals or organisations involved in terrorism," State Department spokesman Richard Boucher said.
The United States and Saudi Arabia will also be submitting the names of the branches to the UN 1267 Sanctions Committee for inclusion in the committee's list.
Once the names are included in the list, all UN member states will be obliged to freeze their assets and implement other sanctions.
"Efforts to deprive terrorists of the funds they need to operate and recruit can only be effective with strong international cooperation," Boucher said.
He said the actions, undertaken jointly with the Government of Saudi Arabia, are an example of the important steps we must continue to take if we are to be successful in our efforts.
"We have previously submitted for UN designation six branches of Al Haramain with Saudi Arabia (Bosnia, Somalia,
Indonesia, Pakistan, Kenya and Tanzania), as well as Vazir, the successor to the Bosnian branch," he added.
