Today.
Some 500 children have been killed amid the violence in Syria, United Nations High Commissioner for Human Rights Navi Pillay said Tuesday in Geneva, revising a previous estimate of 400 dead children.

In January alone, 80 children were killed, the United Nations High Commissioner for Human Rights said.

Pillay cited unspecified reports as the source of her statement, which came just three weeks after the United Nations Children's Fund made the previous estimate.

Pillay, said the international community has to take action to prevent Syrian security forces from continuing their attacks against civilians, which she said had resulted in "countless atrocities."

"There must be an immediate humanitarian cease-fire to end the fighting and bombardments," Pillay told an urgent meeting of the U.N. Human Rights Council.

She urged Syria to end all fighting, allow international monitors to enter the country and give unhindered access for aid agencies to enter Homs and other embattled cities