People all over the world have observed prayer vigils in honor of the victims of the barbaric attack in Nice which killed 84 people and injured more than 50.

Prayer vigils were observed in various parts of the world on Friday, including in Toronto, Moscow, Sydney, London and in San Francisco where a candlelight vigil was organized.

People gathered outside the French embassy in Moscow, carrying posters such as 'Pray for Nice,' and 'Stay Strong.'

Many people mourned for the victims of Nice attack in Sydney, and the French flag was also raised over the Sydney Harbour Bridge.

France had announced a national period of mourning for three days.

In the U.S., a prayer vigil was also held in Lakeway, Texas, where people mourned for 51-year-old Sean Copeland and his 11-year-old son Brodie, who were among the Nice victims. The family, friends, and community of the Copelands also gathered for prayer for them.

The River in the Hills Church also held a prayer vigil for the father and son. They were not members of the church yet, but Pastor Glenn Hubbard kept the vigil for them.

"When I realized it's right here, it's someone maybe a mile away from my own home I thought this is tragic, this is horrible, but I also thought we need to come together and show our love for this family," he said.

An interfaith prayer vigil also took place at Louisville’s Islamic Center, at which the Muslim community condemned the terrorist attack.