Paris attacks: How unity march unfolded - in 60 secs

Up to 1.6 million people are estimated to have taken part in a unity march in Paris, after 17 people were killed in three days of terror attacks.

More than 40 world leaders joined the start of the Paris march, linking arms in an act of solidarity.

The families of the victims, as well as workers from the Charlie Hebdo magazine, led the crowd.

BBC News takes a look at some of the day's most memorable moments.