The affected equipment was said to have a mechanical sail that rotates above the audience.
The statement continued, "A handful of injuries were reported, and whilst extremely regrettable, fortunately none of these injuries were serious. Those affected were seen by medics and four people - including one performer - were treated for minor injuries. The Roundhouse is committed to the safety and well-being of its audiences and undertakes rigorous risk assessments for all of the shows that take place here. We are investigating what led to the issues experienced during this performance."
Weekend performances following the incident were canceled. Performances will resume Jan. 21, without the sequence in question.
To book tickets, contact the box office on 0844 482 8008 or visit www.roundhouse.org.uk.