Several hundred people without face masks caused a disruption at the Tokyo District Court on Tuesday, ahead of a hearing of a case brought by plaintiffs opposed to COVID-19 vaccinations.

Court officials scrambled to put in place anti-coronavirus measures after a long line of people formed at the security check point ahead of the hearing, which was due to begin 1:30 p.m, with some other visitors seen complaining they would be late for their sessions.

The plaintiffs claimed in the lawsuit: "there is no scientific evidence of vaccine safety. The effectiveness of masks is also questionable."