The U.S. has condoled with Nigeria and families of victims of the twin bomb blasts in Madagali, Adamawa, which claimed scores of lives and injured several others on Friday.
The "female bombers detonated an IED (improvised explosive device) inside a local market", according to a tweet from the National Emergency Management Agency in Nigeria.
"It was dead bodies and wounded people in the midst of blood, spilt grain and abandoned personal effects", he said.
"After a period of relative calm for the people of northeastern Nigeria, this tragic attack is a reminder of the need to remain vigilant and maintain a sense of urgency in the fight against Boko Haram".
He said security agents had cordoned off the scene of the explosions.
Boko Haram, which has one branch allied to the Islamic State group, wants to install an Islamic state in Nigeria, West Africa's oil giant of 170 million people divided nearly equally between a mainly Christian south and predominantly Muslim north.
"The battle against terrorism is a joint effort involving all citizens, both government and governed".
The jihadist group has killed some 15,000 people and forced more than two million people to flee their homes.
Nigeria's military campaign against the jihadists is increasingly bogged down as it confronts suicide attacks, looting and indiscriminate slaughter.
The United Nations has warned that areas affected by Boko Haram face a humanitarian crisis.