By the Blouin News World staff

Explosion kills dozens at Nigeria cattle market

by in Africa.

People from the Nigerian town of Malam Fatori an its area, close to the borders with Niger and Chad, fleeg Islamist Boko Haram attacks in the Nigerian town of Malam Fatori, close to the borders with Niger and Chad, to take shelter in the Niger's town of Bosso secure by Niger and Chad armies, on May 25, 2015.  AFP Photo

People from the Nigerian town of Malam Fatori an its area, close to the borders with Niger and Chad, fleeg Islamist Boko Haram attacks in the Nigerian town of Malam Fatori, close to the borders with Niger and Chad, to take shelter in the Niger’s town of Bosso secure by Niger and Chad armies, on May 25, 2015. AFP Photo

A bomb blast at a busy market in Nigeria’s northeastern city of Maiduguri has killed about 50 people, according to witnesses and hospital sources.

There was no immediate claim of responsibility for Tuesday’s explosion in the Gamboru cattle market, but there have been repeated attacks by the armed group Boko Haram in¬†Maiduguri and the rest of Borno State.

A military source told the Reuters news agency that the bomb, which was concealed under a butcher’s table in the market, went off at around 1pm, killing shoppers and passersby.

A 12-hour curfew was imposed in the city overnight.

Other attacks blamed on Boko Haram, including on a mosque, killed more than 30 people in Maiduguri over the weekend.

The violence poses a great challenge to the country’s new president, Muhammadu Buhari, who announced on Friday that he is moving the military’s headquarters from the capital Abuja to Maiduguri to better tackle Boko Haram.

Meanwhile, militant Islamists in Nigeria have released a new video and, unusually, Boko Haram leader Abubakar Shekau fails to appear in it, reports the BBC.

Instead, an unidentified young man speaks in the name of “The army of the caliphate in West Africa”.

Shekau’s absence from the video has fuelled speculation about his fate.

At least 13 people were killed on Tuesday in a bombing at a cattle market in Maiduguri city, a former Boko Haram stronghold in north-eastern Nigeria.

In the 10-minute video, the speaker dismisses as a lie the Nigerian military’s assertion that it has recaptured all cities and towns from the militants.

He shows the identity cards of government troops he says have been killed, and the wreckage of what he describes as a jet that had been brought down.

The fact that it was issued under the banner of “The army of the caliphate in West Africa” reflects that the group is now allied with Islamic State (IS) militants fighting for a global caliphate, he says.