Japan marked the 25th anniversary Friday of a sarin nerve gas attack in the Tokyo subway system that killed 14 people and injured more than 6,000 others.

A memorial service was held at Kasumigaseki Station, where subway staff wearing face masks to guard against COVID-19 infection observed a moment of silence at 8 a.m., around the time when the attack occurred on March 20, 1995.

The Aum Shinrikyo cult, which carried out the attack, has been disbanded, and its founder Shoko Asahara and senior members were executed in 2018. But successor groups remain active.