About 100 people held an anti-Israel demonstration on Thursday during a lecture by former Prime Minister Ehud Olmert at a synagogue in the city of Bochum in Germany, Israel’s Channel 2 News reported.

According to the report, Olmert spoke to about 2,000 members of the local Jewish community on Israel and the current political situation. An Iranian activist living in Germany learned of the lecture and decided to organize a demonstration through Facebook. His plan was to burst into the synagogue and not allow Olmert to speak.

The German police, Channel 2 reported, saw the event on Facebook and sent reinforcements to the area, thus foiling the demonstrators’ plan to physically enter the synagogue and disrupt the lecture.

“They sent large forces with barriers and managed to keep the demonstrators at a distance of two-three kilometers from the synagogue,” Olmert’s media adviser, Amir Dan, told Channel 2.

The report also noted that during the demonstration, protesters called Israelis “terrorists” and “murderers of children in Gaza.” Inside, Olmert’s lecture continued as planned. German police are investigating who is behind the demonstration.