Germany’s Envoy to the Palestinian Territories and  two other officials last month visited the Palestinian organization Al Haq, a group involved in the anti-Israel Boycott, Divestment, Sanctions (BDS) campaign.

BERLIN—The German foreign ministry said it has instituted new social media guidelines and disciplined personnel after anti-Israel tweets were “liked” by the official Twitter account of the German mission to the Palestinian territories.

The Foreign Ministry said Tuesday that 10 people had access to the @GerRepRamallah account.The ministry said the account wasn’t secured against unauthorized users.

Germany’s envoy to the Palestinian territories, Christian Clages, is being probed after he “liked” the tweets that criticized Israel. The heart icon was clicked for several controversial posts, including ootage of an attack on Israeli soldiers and another video showing an exchange between American white supremacist David Duke and another user about an alleged massacre of Jews.

A tweet comparing the work of Holocaust Memorial Yad Vashem with the presentation of history in “totalitarian states” was also liked.

The newspaper said Clages and two other officials last month visited the Palestinian organization Al Haq, a group is involved in the anti-Israel Boycott, Divestment, Sanctions (BDS) campaign.