The Secret Service disrupted a potential plot to “disrupt the [United Nations] General Assembly” Tuesday after seizing a cache of hundreds of computer servers and tens of thousands of SIM cards capable of disabling cellular towers or conducting surveillance, according to a report from the New York Times.

The UN General Assembly is set to meet later Tuesday morning in New York City, New York, where close to 150 world leaders will convene for its annual session. President Donald Trump is also slated to address the international body at 9:50 a.m. EST.

The potential plot to disrupt the UN General Assembly was announced shortly before the body convened by Matt McCool, Secret Service special agent in charge, who said updates to the agency’s investigation would be forthcoming.

“We will continue working toward identifying those responsible and their intent, including whether their plan was to disrupt the U.N. General Assembly and communications of government and emergency personnel during the official visit of world leaders in and around New York City,” McCool said in a video statement.

According to the New York Times, 100,000 SIM cards and 300 computer services were seized at several locations within 35 miles of the UN headquarters, and had documented “telephonic threats” made to “three high-level US government officials” earlier this spring.