A security official said on Monday that Gunmen killed at least 22 people at a village market in remote northeast Nigeria, in what was likely the latest attack by the militant Islamist group Boko Haram. Boko Haram, which aims to carve out a hardline Islamist state in Nigeria's restive north, has stepped up its ferocious attacks since abducting more than 200 girls in April from a school in the village of Chibok in Borno state. The attack on the remote village of Daku, an area bordering Chibok, started on Sunday, said the official who asked not to be named. The gunmen arrived in a military column and brandished AK-47s, which was similar to previous Boko Haram attacks. Boko Haram has killed thousands since 2009 in its push to carve out an Islamist state in Nigeria's restive north. Northeast Nigeria is now wracked by almost daily attacks.