Surely the member would admit that we should not prejudge the inquiry and that there were some students or even non-students who were members of groups such as the International Socialist Workers Party and other radical organizations who were clearly there to disrupt the summit, posing a security threat and tearing down a security wall separating them from heads of states.
Can we infer the following?
The disruption at the event is being investigated.

Available choices:
[1]. Yes
[2]. It's impossible to say
[3]. No
The answer is:
[2].