A top al-Qaeda commander, who was reported killed in a US drone strike last year, has appeared in a video warning India of more Mumbai-style terror attacks if it tried to attack Pakistan.

"India should know that it will have to pay a heavy price if it attacks Pakistan," Mustafa Abu al-Yazid, believed to be al-Qaeda's military commander in Afghanistan and ranked behind No 2 Ayman al-Zawahiri, said in a 20-minute video in Arabic received by BBC.