There was a huge plaster on Sarah Peter's head to staunch the bleeding caused by the blow of a gunman's weapon.

Sarah, not her real name, was in church in a village in northern Nigeria on Sunday morning when attackers raided the compound to abduct the worshippers and take them away on foot.

The 60-year-old was whacked on the skull with a rifle to encourage her to move.

"Blood was all over," she said, her fingers brushing the area where the wound was.

"I suffered," she added, clearly still traumatised by what happened three days earlier.