Suspected Boko Haram militants have killed at least 64 people in a village in Borno state, north-east Nigeria, witnesses have said.
The gunmen who stormed Njaba targeted men and boys before setting the village on fire, survivors added.
The raid happened early on Tuesday but was not reported immediately because of the remoteness of the area.
Boko Haram has killed thousands of people in its drive to establish an Islamic state.
The raid on Njaba came as many villagers were attending morning prayers, a witness quoted by news website Sahara Reporters said.
Fatima Abaka said there was “pandemonium” when the shooting started.
“I ran into the bush. Since then I [have] never seen my husband and three children,” she said. “[I] came back to our village in the afternoon, dead bodies were scattered everywhere.”
Another witness, Aminatu Mommodu, said the bodies of victims, including many men with their throats slit, were in the mosque.
Other villagers caught by the gunmen outside the mosque had been shot, she said.