Ellen DeGeneres: "Let's all send our thoughts, our prayers and our energy to the people injured in Boston. My heart is with you."
Chloë Grace Moretz: "Horrific things happening in the world today. God bless those who have died and are injured."
Patton Oswalt: "'Look for the helpers. You'll always find people who are helping.' – Fred Rogers, on what to do when scary things are on the news #boston"
Kevin Jonas: "prayers go out to everyone in Boston. We all love you and we are praying for you"
Ethan Zohn: "I'm OK. Most importantly, praying for those injured and affected by this. Still don't have a lot of info. Thanks for your love and concern."
Nicki Minaj: "My heart goes out to everyone who woke up this morning to enjoy a peaceful marathon but were met w/senseless destruction. #GodBlessAmerica"
Pete Wentz: "Boston be strong."
Ciara: "I Had a lot of exciting announcements planned for 2day, but there's no way I can focus on myself during a time like this. #PrayingforBoston♥"
Justin Timberlake: "My thoughts and prayers are with everyone in the city of Boston and all of those affected by this terrible incident."
Zoe Saldana: "My prayers and thoughts are with the victims who lost their lives today at the Boston marathon. Que Dios los tenga en su gloria. ZS"
Joey McIntyre: "There was an explosion by the finish line about 5 minutes after I finished – I'm ok but I'm sure there are many hurt… I don't know what to say. I feel for everybody involved with the Boston Marathon. My family is ok. I am ok. Gonna take a while to process."
Donnie Wahlberg: "Going to be off twitter for a while today," Wahlberg said. "Many friends and loved ones to check in on. Please #PrayforBoston and all those impacted by this. ... Check in on all your friends who're fans of Joe Mac. Knowing BH's the way we do, I'm sure some were out to support Joe today. No words to describe the pain in my heart, at this moment, in seeing my city torn apart this way. So sad. Please #pray4boston & the victims."
Jonathan Knight: "I cant believe what I’m seeing on the news. I hope this turns out to be an accident and not an act of hate or terror. #BostonMarathon."
Kim Kardashian: "My heart is breaking for everyone effected or injured in the explosion at the Boston Marathon. God bless you all! My prayers are with you!"
Lindsay Lohan: "Sending prayers to everyone who was/is at the #bostonmarathon."
Maria Menounos: "Praying for everyone home in boston. Devastated at the news #bostonmarathon."
Carson Daly: "Praying for those hurt at #bostonmarathon – so terrible. 2 explosions at Finnish line. News is all over it. So sad"
Dane Cook: "My prayers with everyone in Boston right now after this atrocious act of violence!!"
Lance Armstrong: "Just off the bike and getting the news from the Boston marathon. Thoughts & prayers go out to Dave M, his staff, all runners, and volunteers."
Lil Wayne: "Prayers for Boston"
Kat Dennings: "This is crazy. Glued to the TV, so scary. Thoughts and prayers with Boston right now."
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