Why Is Britney Spears Devastated?

A 31-year-old woman was killed when she fell from a fairground ride set up right outside Dublin's O2 arena after a Britney Spears concert there Monday.

The singer took the news particularly hard.    

"I was saddened to hear of the tragic accident in Dublin. My heart goes out to the family. - Britney," Spears personally tweeted after the incident.