Stuart Trimby from Cardiff told us how he was on the last mile of the Boston Marathon when he heard two explosions.
Pictured here with his friend Emma Clatworthy Davies before the race, he said he feels "shock and sadness" at the way a positive occasion was ruined by the explosions.
You may find some of the images in the video upsetting.
More top news
She's been playing rugby since she was eight and now Sian Williams is Wales' first full-time professional female rugby player.
A judge said the three men were 'waiting in the wings to assist anyone ready to travel to Syria.'
A number of Welsh hospitals says they are facing extreme pressures, the Welsh Government announces more money to help.