WATCH CBS NEWS VIDEO: DNC NEWS AND ANALYSIS LIVE COVERAGE
'Pray For Boston' Tweets Fill The Social Media StreamTweets with the hashtage PrayForBoston came streaming in shortly after the incident.

More From CBS Detroit

Best 4th Of July Concerts In Metro DetroitStaying home this weekend? Celebrate the 4th of July by rocking out at one of these shows.
Hump Day Drinks: 8 Cheery Cocktail RecipesNow that you've made it through half the work week, it's time to celebrate!

Watch & Listen