Workers at Kasumigaseki Station in Chiyoda Ward, Tokyo, offered flowers and prayers Thursday to mark the 19th anniversary of the deadly 1995 sarin gas attack on the subway system by the Aum Shinrikyo cult.

At 8 a.m., around the same time the group's members released the nerve gas on several Tokyo subway lines on March 20, 1995, about 20 workers held a silent prayer to honor two Kasumigaseki Station attendants who died, as well as other victims.

The attack killed 13 and injured more than 6,000 people.