Members of the US Congress held a prayer and a moment of silence for the more than 200 Nigerian girls kidnapped by the Boko Haram Islamist militant group last month.
US Senate Chaplain Barry Black led the prayer among a group of women lawmakers including House of Representatives Minority Leader Nancy Pelosi and Senator Barbara Mikulski (D-Md).
"It is clear that what has happened in Nigeria is outside the circle of civilised human behaviour," Pelosi said.
"It is clear that kidnapping these girls challenges the conscience of the world in a very specific and different way".
Mikulski said Senator Susan Collins (R-Me.) and she have initiated a bipartisan letter asking President Barack Obama move to place Boko Haram on the international list of terror groups
The Nigerian military has flown more than 300 sorties in the hunt for the abducted schoolgirls, a Major has told ITV News' Rageh Omaar.
A newly released video from Boko Haram reportedly shows the kidnapped Nigerian schoolgirls.
The man who started a viral hashtag campaign in support of the kidnapped Nigerian schoolgirls says it has forced the government to act.