Adrian Edwards, spokesman for the UN High Commissioner for Refugees, said that 4,000 people had fled to Cameroon since mid-January, and 1,500 to Niger.
In northern Cameroon, UN aid workers met with refugees from around the town of Banki, which lies just over the border in Nigeria.
"The refugees said their villages were bombed, that several people had been killed and that at least two villages were burned to the ground," Edwards told reporters.
Thousands of people have fled across the borders or to other parts of Nigeria to avoid being caught up in the fighting, to escape attacks by militants or to flee what human rights groups say is a heavyhanded government crackdown that has also affected civilians.
The new influx raises the number of Nigerian refugees in Cameroon to more than 12,400- just over 2,000 of whom have been moved to camps deeper inside the country.
The latest refugees there told UN aid workers that they had fled a village after its mosque was attacked, seven people were killed and 60 shops torched.
Most of the refugees were women and children, and were being hosted by the local community, Edwards said.
The UN has appealed to countries in the region to keep their borders open for Nigerians who need a haven, and not to send back any refugees.
Boko Haram have been fighting a drawn-out insurgency since 2009 in the mainly Muslim north, attacking schools teaching a "Western" curriculum and churches, claiming thousands of lives.
Emergency rule has largely succeeded in pushing the militants out of towns and cities in the wider north but attacks are still frequent in more remote areas, particularly in border regions.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
