Sky News sports correspondent Paul Kelso has said runners at the London Marathon will be encouraged to wear black ribbons on Sunday to remember the victims of the Boston blasts:
Runners will also be encouraged to wear black ribbons, which will be distributed when they register for the race
Earlier organisers of the race said they would be holding a period of silence before the start of the race.
More top news
The FBI is believed to have fitted a tiny microphone into a hotel key fob to spy on officials.
A woman who refused to get married as a 'fat bride' tells GMB she shed six stone after a nasty jibe about her weight left her in tears.
A car ended up on a motorway embankment and got stuck in the trees after the driver lost control.