Northwest Nigeria violence drives 20,000 into Niger since April - UNHCR

GENEVA (Reuters) - Violence in northwest Nigeria has forced around 20,000 people to seek safety in neighbouring Niger since April, the United Nations refugee agency said on Tuesday.

It said the surge was not linked to Islamist group Boko Haram.

"People are reportedly fleeing due to multiple reasons, including clashes between farmers and herders of different ethnic groups, vigilantism, as well as kidnappings for ransom," it said in a media briefing.

(Reporting by Stephanie Ulmer-Nebehay; Writing by Alexis Akwagyiram; editing by John Stonestreet)