U.S. condemns attacks by Boko Haram in Nigeria
"Unspeakable violence and acts of terror like the ones committed by Boko Haram last week in northern Nigeria are horrific, wrong and have no place in our world," Kerry said in a statement.
Boko Haram gunmen killed about 100 people in the northeastern Nigeria town of Bama on Wednesday, storming the town, firing on a school, shooting or burning to death dozens of people and trashing the palace of a traditional ruler of one of West Africa's oldest Islamic kingdoms.
Last Sunday, Boko Haram gunmen killed more than 100 people in the village of Igze, spraying homes with bullets, detonating explosions and burning down dozens of houses.
"We support Nigerian authorities' efforts to investigate these cowardly acts and to bring the perpetrators to justice," Kerry added.
"The people of northern Nigeria deserve to live free from violence and from terror," Kerry said. "That's why the United States is providing counterterrorism assistance to help Nigerian authorities develop a comprehensive approach to combat the threat posed by Boko Haram while protecting civilians and ensuring respect for human rights."
Nigerian President Goodluck Jonathan ordered extra troops into northeast Nigeria in May to crush Boko Haram, which wants to create a breakaway Islamic state in the largely Muslim north. The offensive, backed by air power, has so far failed.
The United States last November designated Boko Haram and another Nigerian Islamist group, Ansaru, as foreign terrorist organizations, making it a crime to provide them with material support.
The White House directed U.S. agencies to block financial transactions with the two groups, which it blamed for thousands of deaths in northeast and central Nigeria, including attacks on churches and mosques and a 2011 suicide bombing of the United Nations building inAbuja.
The militants have retreated into the remote, hilly Gwoza area bordering Cameroon, from where they mount deadly attacks against civilians they accuse of being pro-government, and are abducting scores of girls - a new tactic eerily reminiscent of Uganda's cult-like Lord's Resistance Army in decades past.