"This is another senseless act of barbarism that underlines the need to unite against the common enemies of peace and humanity," Abdullah said in a statement here.
"My heart goes out to the affected people and I pray the situation improves and incidents like these are never repeated," he said.
Expressing profound grief and sorrow over the loss of lives, the former Union minister prayed for peace to the departed souls and expressed solidarity with their families.
"I pray for those who have been affected and express my heartfelt solidarity with them," Omar said.
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PDP president and Member of Parliament Mehbooba Mufti also condemned the Lahore terror attack and highlighted the need to unite against enemies of peace and humanity.
"This despicable act is utterly contemptible and highly condemnable," Mehbooba said while expressing deep grief and sorrow over the tragic loss of innocent lives at Gulshan-e-Iqbal Park in Lahore.
"My heart goes out to the victims and their families and friends," she said, adding such senseless acts of violence underline the need for uniting against the enemies of peace and humanity.
She said the perpetrators of the attack cannot be termed as humans and they can never be part of civilised world.