U.S. dropped GBU 43 weapon to destroy ISIS network in Afghanistan: White House

White House Press Secretary Sean Spicer confirmed the use of GBU 43 bomb, Washington's most powerful non-nuclear bomb in Afghanistan to destroy a tunnels and caves network of the Islamic State.

"At 7 p.m. local time in Afghanistan last night the U.S. military used the GBU 43 weapon. It is a large, powerful and accurately delivered weapon. We targeted a system of tunnels and caves that ISIS fighters used to move around freely making it easy for them to target the U.S. military advisors and afghan forces in the area," Spicer said in press briefing on Thursday.

Spicer added that they used all necessary precaution to avoid civilian causalities and collateral damage.

Earlier, CNN reported that the U.S. military has dropped its most powerful non-nuclear bomb in the Achin district of Afghanistan's Nangarhar province to target the Islamic State.

The Nangarhar province borders with Pakistan.

According to the report, a GBU-43/B Massive Ordnance Air Blast Bomb, nicknamed MOAB and also known as the "mother of all bombs" is a 21,600-pound, GPS-guided munition that is America's most powerful non-nuclear bomb.

This is the first time a MOAB has been used in the battlefield, according to the US officials. This munition was developed during the Iraq War.