As many as 104 children were among the 126 people killed when heavily armed terrorists launched a brazen attack on an army-run school in Pakistan's Peshawar city.

Celebrities took to Twitter following the shocking news and called for global peace. Here's what they had to say:

Javed Akhtar: 104 innocent children are killed by Talibans In Peshawar. A black day for humanity.

Priyanka Chopra: Appalling! What kind of wimps hurt kids! I send out a prayer. Please god...in whichever form and whatever name. Pls teach your children to value human life. I pray for peace. #PeshawarKaran Johar: The Peshawar killing is just heartbreaking...the death of humanity on every level....helplessness is the only feeling.

R Madhavan: Ohhhhhh...No no no. Please not children in schools. God this is not right. My heart and prayers go out to the children and families in Peshawar. Who are these people actually. Where are they from, their families, their upbringing, their faces, what can drive them to kill children.

Raveena Tandon:
Which religion in the name of God allows this? Any parents nightmare #griefbeyondcompare The horror the pain! Oh god you are being questioned now as the world sheds tears for those innocent souls! Lil Angels of the future!

Farhan Akhtar: My heart has broken. The world failed those children in Peshawar ... It's a sad sad day.

Arjun Kapoor: Just reading about Peshawar never felt more helpless...my prayers with everyone in Peshawar all the children and parents...sad sad day.

Vishal Dadlani: This happens when you mix religion and politics. It's a sad, sick world, where kids are killed in the name of God and politics. #Peshawar

Salim Merchant: Very disturbed about the terrorist attack in Peshawar army school. 21 kids lose their lives and many injured. When will this stuff stop?

Sophie Choudry: Innocent kids are victims and yet again religion the sick excuse. Heartbroken and ashamed that this is the world we live in! #PeshawarAttack

Shekhar Ravjiani: My heart goes out to the innocent souls that lose their lives everyday to acts of terror. Pray that humanity prevails someday.

Jackky Bhagnani: It's shameful that terrorists are using innocent children to get their demand fulfilled. I pray for the safety of all the children.

Rajat Kapoor: Millions of year of evolution- FOR THIS? Kamaal hai!

Riteish Deshmukh: Death of Humanity - Wake up World - it's not their issue -it's our issue - we need to stand up.#PeshawarAttack

Sonu Sood: How can anyone kill 100 innocent students? Can't be humans. My heart goes to the parents of those innocent Angels..#PeshawarAttack.

Milap Zaveri: They say God lives in every child. These Taliban bastards have killed God by killing these children. Disgusting and heart breaking.

Nimrat Kaur:
Don't have the courage to put the news on ... Reading about the children of Peshawar is heart wrenching enough . No words at all.

Vivek Oberoi:
*Killing innocent unarmed school children? This is not war, this is not -#*jihad, this is not -#Islam! This is purely inhuman! -#PeshawarAttack

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