What was the reason for a period of silence observed during the closing ceremony of the 2016 Summer Paralympic Games?

Question

What was the stated motive behind a bombing in Centennial Park during the 1996 Summer Olympic Games in Atlanta, Georgia, USA?

Answer 1

The death of a cyclist during competition
Iranian Paralympic racing cyclist Bahman Golbarnezhad collided with a rock on a mountainous stretch of the circuit and died on the way to hospital. He was the first athlete to die in any Olympic competition since 1960.