New York - The spokesman Daesh emerged from nearly six months of silence Monday to mock America’s assertion of having defeated the group and to call for retaliation over last week’s mosque attacks in New Zealand.

“The scenes of the massacres in the two mosques should wake up those who were fooled, and should incite the supporters of the caliphate to avenge their religion,” the spokesman, Abu Hassan Al Muhajir, said in a 44-minute audio recording.

Al Muhajir portrayed the shootings by a white extremist, which killed 50 Muslims as they prayed in the city of Christchurch, as an extension of the campaign against Daesh. He likened the mosque attacks to the weekslong battle raging in the last village under Daesh control in Syria.

“Here is Baghouz in Syria, where Muslims are burned to death and are bombed by all known and unknown weapons of mass destruction,” he said, painting the people in the town as regular Muslims when in fact coalition officials believe that the majority of them are either Daesh fighters or their wives and children.

Throughout his speech, Al Muhajir belittled the White House’s claim of victory over the terrorist organisation, calling it a “state of confusion and contradiction that make it impossible for any observer to know what is meant by the word ‘victory.’”

Al Muhajir - the name is an invention, and his true identity is unknown - is a faceless but important figure inside the terrorist group. He is not known to have ever appeared in photographs or in the group’s numerous videos, and almost nothing is known about his personal biography.

In a testament to the security precautions he takes, he released just two audio statements in 2018, with the last one, appearing in September, less than four minutes long. The spokesman’s extended absences - much like those of the group’s leader, Abu Bakr Al Baghdadi - have fueled rumours of his death.

Beyond its references to recent events, what is notable about the recording - which was released by the group on the Telegram mobile messaging app - are its numerous mentions of in-the-weeds details regarding Daesh-related current events.

Al Muhajir refers to President Donald Trump’s claim not to know Brett McGurk, the US special envoy in the fight against Daesh group, who resigned in protest over Trump’s decision to pull US troops from Syria.

As anti-Daesh forces pursue Al Muhajir and other senior members of the militant group, it is assumed that they avoid detection by shunning electronics, especially cellphones, and limiting contact with couriers, whose movements can be tracked. That raises a number of questions: How did he know about the slaughter of Muslims in New Zealand? Is he hunkered down in a house in Iraq or Syria and relying on local TV coverage? Did one of his aides bring him the news?

His detailed knowledge of current events is clear as he makes a jab at Trump’s hasty visit to Iraq in December, his first to see troops stationed in a combat zone. At the time, the president called it “sad” that he had to take such extensive security measures to make the trip even after the United States had spent $7 trillion trying to stabilise the Middle East.

Al Muhajir refers to the $7 trillion, adding: “How strange for a victor who can’t even announce publicly an official visit to a country he claims to be bringing peace and stability to. He could only come like a frightened and cowardly thief.”

Among the revelations in the recording is that Al Baghdadi, the group’s leader, is still alive, at least according to the spokesman. Although Al Baghdadi has been declared dead several times, most recently by Russia after an air strike in Syria, U.S. officials have long maintained that he is most likely still living.

Al Muhajir closes the recording by referring to Al Baghdadi using an honorific, “May God preserve him,” that is employed when a person is still alive.

In the final passage of his speech, the spokesman offers a tip from Al Baghdadi, suggesting he has spoken to him: “A message of advice from the caliph of the believers regarding communication devices: Be careful, careful of communication devices - even if it slows down work from two days to seven days.”