The father of a 17-year-old boy killed a year ago in a collision between two subway trains in Tokyo's Meguro Ward received a graduation certificate in his son's name on Wednesday from the high school the boy attended.

Kunihiko Tomihisa, 54, father of Shinsuke Tomihisa, attended the graduation ceremony at Azabu High School in Minato Ward and was handed a certificate for his son.

Today is the first anniversary of the accident, in which a Hibiya Line train traveling above ground derailed and collided with an oncoming train. Five passengers, including the boy, were killed and 64 others were injured.