The UK government has refused to release information relating to an Israeli influence firm accused of interfering in Scotland’s parliamentary election, invoking national security and warning that disclosure could damage Britain’s relations with other countries, according to a report by The National.

The Scottish newspaper reported that the Cabinet Office withheld all material requested under Freedom of Information (FOI) legislation concerning BlackCore, an Israeli firm linked by France’s foreign interference watchdog to an alleged digital influence operation targeting Scottish First Minister John Swinney and the Scottish National Party (SNP).

The controversy follows findings by Viginum, France’s service for protection against foreign digital interference, which said in June that it had identified BlackCore-linked operations affecting elections in Scotland, France, New York City, Angola and Togo.

In Scotland, Viginum identified the “mobilisation of at least 256 accounts” which posted around 1,400 comments, primarily targeting Swinney, the SNP and the Scottish Government. Of those, 652 targeted Swinney personally, according to the French investigation.

BlackCore removed its online presence after being publicly identified, while the identity of those behind the alleged campaign has not been established publicly.