Al-Qaeda warns US

CAIRO: Al- Qaeda leader Ayman al- Zawahri warned the US of the “gravest consequences” if Boston Marathon bomber Dzhokhar Tsarnaev or any other Muslim prisoners is executed.

Tsarnaev, named in Zawahri’s online video message, was sentenced to death by lethal injection on June 24 last year for the 2013 bomb attack which killed three people and injured more than 260.