WASHINGTON The U.S. has stopped issuing export licenses for most civilian firearms and ammunition for 90 days for all non-governmental users, the Commerce Department said on Friday, citing national security and foreign policy interests.

The Commerce Department did not provide further details for the pause, which also includes shotguns and optical sights, but said an urgent review will assess the "risk of firearms being diverted to entities or activities that promote regional instability, violate human rights, or fuel criminal activities."

The Commerce Department declined to comment beyond the posting on its website.

Export licences for Ukraine and Israel, as well as some other close allies, will be exempted from the temporary halt in exports.

Exporters can continue to submit license requests during the pause, but they will be "held without action" until the pause is lifted.

The pause does not affect previously issued export licenses, Commerce said.

For shipments to government clients, exporters must name specific end users, while applications with unnamed government, military, and police users will be "returned without action."

(Reporting by Chris Sanders and Karen Freifeld; Editing by Sandra Maler)