http://www.bbc.co.uk/news/world-us-canada-22160691

Two people have been killed and 23 injured after two explosions at the finish line of the Boston Marathon, police say.

The blasts shattered the carnival atmosphere of one of the biggest sporting events in the US, causing panic and confusion.
Bloodied victims were initially rushed to a medical tent set up to care for fatigued runners.

Emergency services descended on the scene, which was quickly locked down.

The cause of the explosions has yet to be confirmed.
Deplorable and terrible act isn't it? I hope it doesn't take long to find out who's behind it and bring them to justice.