Al-Qaeda has released a message, purportedly from Osama bin Laden's son Hamza, calling for attacks on London and other western cities.
The audio recording was shared by Jihadists on Twitter, and is the first such message from Hamza bin Laden, who is believed to be either 23 or 24 years old.
He had not previously been put forth as an al-Qaeda spokesman, but he has been touted as a future leader of the terror network.
Letters found in Osama bin Laden's Abbottabad compound suggest that he was grooming Hamza as his successful prior to his death in 2011.
The group has been led since that time by Ayman al-Zawahiri, who was bin Laden's right hand man.