Japan on Friday commemorated the 20th anniversary of doomsday cult Aum Shinrikyo's sarin attack on the Tokyo subway system, which killed 13 people and left more than 6,000 sick or injured.

Families, acquaintances and former colleagues of the victims gathered in the morning at one of the scenes of the coordinated attack — Kasumigaseki Station in Chiyoda Ward — to observe a moment of silence and leave flowers in honor of the victims.

Prime Minister Shinzo Abe also visited the subway station and left a bouquet.