Militants have killed at least 10 people in Nigeria by using rocket-propelled grenades, which local officials describe as a "new trend".

Suspected Boko Haram militants fired from the outskirts of the north-eastern city of Maiduguri into densely populated areas, according to Borno state governor Babagana Zulumon.

He said the use of these weapons "has to be stopped".

It is the worst attack of its kind in Maiduguri in a year.

The city is the birthplace of Boko Haram.

The militants came through Boboshe village, a known Boko Haram enclave, AFP news agency quotes eyewitness Sama'ila Ibrahim as saying.

Read more: BBC News