Pakistani security forces have arrested four individuals allegedly involved in this week’s suicide bombing outside a courthouse in Islamabad. The government confirmed on Friday that the attack was orchestrated from Afghanistan and claimed by Tehrik-i-Taliban Pakistan (TTP). Authorities said the detainees are connected to the TTP and were directed by senior commanders based in Afghanistan. The suicide bomber, identified as Usman alias Kari from Afghanistan’s Nangarhar province, was among those involved. Interior Minister Mohsin Naqvi stated that the attacker was an Afghan national, noting that Islamabad had largely remained free of major terrorist attacks since December 2022. The government has accused Afghan-based militant groups of fueling renewed violence in Pakistan’s northwest. The Taliban government in Kabul has not officially responded but expressed sorrow and condemnation. Relations between the two neighbors have sharply deteriorated amid recent border clashes and rising tensions.