Musicians have responded to the shocking bomb attack at the Boston Marathon yesterday, where two bombs killed three people and injured at least 144 more.
One of those injured when the attack near the finish line yesterday was an 8-year-old boy, and at least 10 people have already had limbs amputated according to CNN.
President Obama has also commented on the attack, saying "Any responsible individuals, any responsible groups, will feel the full weight of justice." He noted that Boston "is a tough and resilient town," and promised that Americans "would stand by them every step of the way."
Scroll down to see the online reaction to this shocking event from rock musicians.
If you want to help the victims of the bomb attack, you can donate to the Boston branch of the American Red Cross today.
Prayers&Godspeed to victims in Boston & hope the guilty are caught & severely punished
Ted Nugent (@TedNugent) April 16, 2013
So sad to hear about what happened in Boston... There are some f--ked up people in this world
Wolfgang Van Halen (@WolfVanHalen) April 15, 2013
thoughts n hearts are with you #Boston
TOMMY LEE (@MrTommyLand) April 15, 2013
Guns N' Roses (@gunsnroses) April 16, 2013
I feel terrible for all the people of Boston. On a day like today, something so evil should take place. Deepest sympathies to all affected.
Slash (@Slash) April 16, 2013
Our thoughts and prayers go out to everyone in Boston today.
America (@americaband) April 16, 2013
Our hearts and prayers go out to the victims and families of those killed and injured in the bombing at the Boston Marathon.#Senseless.
Three Dog Night (@threedognight) April 15, 2013
bretmichaels (@bretmichaels) April 15, 2013
To any and all affected by the events in Boston today... My heart breaks for you. Truly a wonderful city filled with wonderful people.
Dave Phoenix Farrell (@phoenixlp) April 16, 2013
My thoughts and prayers are with the victims, families, and emergency responders in Boston.
Bruce Kulick (@brucekulick) April 15, 2013