On 2-3 August 2020, fighters of the Islamic State (IS) militant group assaulted a prison in Jalalabad, the capital of Nangarhar province, located approximately 150 km (90 mi) east of Kabul. The militants initiated the assault by detonating a vehicle-borne improvised explosive device (VBIED) outside the prison and entered the facility. The assault lasted approximately 18 hours. The Afghan army chief of staff later arrived at the site to lead the operation against the militants. The prison held approximately 1,500 inmates, including several hundred suspected members of IS. At least 29 people were killed and 50 more were wounded. Authorities stated that they killed eight attackers.