(http://news.bbcimg.co.uk/media/images/75921000/jpg/_75921908_nigeriabornochibok4640614.jpg) One of the survivors said some 20 men arrived in a pick-up truck and on motorbikes, Reuters reported.
"Initially I thought they were military but when I came out, they were firing at people. I saw people fleeing and they burned our houses," Samuel Chibok was quoted as saying.
"Smoke was billowing from our town as I left."
The BBC's Will Ross, in the commercial capital Lagos, says a Nigerian air force plane has been seen flying over the area.
However, residents of these extremely vulnerable villages often complain that there are not nearly enough soldiers deployed in the area and they have been calling on the government to arm the vigilante force, our correspondent adds.
AFP news agency named the other villages targeted as Kwada, Ngurojina and Karagau.
According to one account from Kwada, a number of churches there were attacked during Sunday services and worshippers killed before the militants went on to Kautikari.
(http://news.bbcimg.co.uk/media/images/74982000/jpg/_74982323_line976.jpg) Who are Boko Haram? (http://news.bbcimg.co.uk/media/images/75329000/jpg/_75329065_75007899.jpg) Boko Haram leader Abubakar Shekau has been designated a terrorist by the US government
- Founded in 2002
- Initially focused on opposing Western education - Boko Haram means "Western education is forbidden" in the Hausa language
- Launched military operations in 2009 to create Islamic state
- Thousands killed, mostly in north-eastern Nigeria - also attacked police and UN headquarters in capital, Abuja
- Some three million people affected
- Declared terrorist group by US in 2013
Who are Boko Haram? (http://www.theinfostride.com/news/world-africa-13809501)
Profile: Boko Haram leader Abubakar Shekau (http://www.theinfostride.com/news/world-africa-18020349)
Why Nigeria has not defeated Boko Haram (http://www.theinfostride.com/news/world-africa-27396702)
(http://news.bbcimg.co.uk/media/images/74982000/jpg/_74982323_line976.jpg)
Source: BBC