Al-Qaeda leader Ayman al-Zawahiri is the latest person to die in an attack with the Hellfire Ninja R9X missiles, which when launched open up and eject several knife-like blades and hit the target without causing an explosion.

Al-Zawahiri was killed by the American army during a drone attack in Shirpur near the Afghan capital - Kabul, US President Joe Biden announced, Telegraph reports.

He was considered the most wanted terrorist in the world.

And senior officials of the Biden administration told reporters that two Hellfire R9X missiles were fired from the drone in the direction of the leader of the terrorist group.

The R9X carries 45 kilograms of metal blades that are designed not to cause an explosion, but simply to pierce a vehicle or other vehicle and hit the target directly.

The former friend of Osama Bin Laden was staying at home with family members, and the American president emphasized that no civilians were injured or killed during the attack.

The Hellfire R9X missile has become the US military's weapon of choice when it comes to precision and killing wanted terrorists – while causing minimal collateral damage.

This missile was designed at the time of the American president Barack Obama in 2011, out of great fear that the number of civilians killed could be high during drone attacks in the Middle East, so the "ninja" was an adequate missile for this type of attack. – so it doesn't cause an explosion.