The United States dropped a massive 24 thousand - Massive Ordinance Air Blast Bomb - largest non-nuclear weapon in its arsenal during a combat with ISIS in Afghanistan.
The target was an ISIS tunnel in Afghanistan.
The use of the bomb, now confirmed in the US, is the first time ever.
US president Donald Trumps spokesperson Sean Spice said the US is taking the threat form ISIS "very seriously".
"The United States took all precautions necessary to prevent civilian casualties and collateral damage as a result of the operation."
According to the source the bomb dropped is known as MOAB - mother of all bombs.
The blast radious is believed to be 300 meters.
While, the Pentagon has confirmed the blast happened in Afghanistan's Nangarhar.
The bomb, known as the GBU-43B, is a 21,000 lmb giant.
ISIS jihadis are believed to have been taken out.
US Military experts say the blast would "feel like a nuclear weapon to anyone near the area."
The massive ordinance have been tested in at the Eglin Air Force , Florida in 2003.
Jihandis fighting for Islamic State, also known as daesh, are renowned for their huge underground tunnels used in Iraq in Syria.
"As (ISIS-Khorasan's) losses have mounted, they are using IED's, bunkers and tunnels to thicken their defence," said General John Nicholson, who heads US Forces in Afghanistan.