The head of Nigeria’s Boko Haram, Sheik Abubakar Shekau has claimed responsibility for a bombing in the nation’s federal capital city,  Abuja and an attack hours later in the country’s commercial nerve centre, Lagos which the authorities tried to cover up, in a video obtained by AFP today,  Sunday.

In the 16-minute video, Boko Haram leader, Shekau also voices support for the extremist Sunni Islamic State (IS) militants who have taken over large swathes of territory in Iraq and Syria. He mocks the social media and protest campaign Bring Back Our Girls, which emerged after the Islamists kidnapped more than 200 schoolgirls on April 14 from the remote northeastern town of Chibok.

The girls, whose abduction has drawn unprecedented attention to Boko Haram’s five-year rebellion, are not pictured in the video, which was given to AFP through similar channels as past messages. One previous recording showed more than 100 of the abducted schoolgirls, some of whom are Christian, reciting Muslim prayers.

Shekau also said his loyalists carried out twin car bombings in May in the central city of Jos and a June attack at a public health college in the northern city of Kano. According to him “We were the ones who detonated the bomb in filthy Abuja”, referring to a June 25 attack on a popular shopping centre in the heart of the capital that killed at least 22 people.

Later that day a huge explosion also rocked the Apapa port district of Lagos, which the authorities blamed on a cooking gas explosion, with no casualties. Investigations have however revealed that the blast was a deliberate attack involving high explosives. The government has since conceded it was too soon to determine if the Lagos blast was a bombing, and says investigations are ongoing.

“A bomb went off in Lagos. I ordered (the bomber) who went and detonated it,” Shekau says in the video, which shows him flanked by at least ten gunmen in front of two armoured personnel carriers and two pickup trucks. “You said it was a fire incident,” he added. “Well, if you hide it from people you can’t hide it from Allah.”

Analysts have said the Lagos attack was likely carried out by a local militant cell with loose or perhaps no ties to Boko Haram’s core leadership in the northeast, the group’s stronghold. Prior to June 25, Lagos, sub-Saharan Africa’s largest city, had not been hit by Islamist militants.

An escalation of violence in the city, Nigeria’s commercial capital, could have devastating consequences for the government of President Goodluck Jonathan, who has been fiercely criticised for his handling of the insurgency. While boasting about the Lagos attack, Shekau incorrectly identifies the Governor of Lagos State, taunting Adams Oshiomole, who is in fact the Governor the southern Edo State. Lagos State is led by Governor Babatunde Fashola.