Tokyo subway workers commemorated the 21st anniversary Sunday of the Aum Shinrikyo cult's deadly sarin nerve gas attack that killed 13 people and injured over 6,000 others in the capital.

Tokyo Metro Co. employees observed a moment of silence at Kasumigaseki Station and some relatives of victims laid flowers there to mourn those who fell in the terrorist attack on March 20, 1995. Two company employees were killed by the attack at the station.

"We shouldn't forget the actions of those before us who acted to save people's lives. We intend to continue doing our job to protect the safety of passengers," area manager Mitsuaki Ota said.