The US-led forces have killed a 60-year-old Afghan farmer in an overnight raid in Afghanistan’s eastern Nangarhar province, Press TV reports.
NATO claims the five had links with Taliban militants in Nangarhar.
Tribal leaders, however, have confirmed to Press TV that the victim was a 60-year-old farmer and had no links with the militants.
The four detainees are all close relatives of the victim.
Hundreds of civilians have lost their lives in US-led airstrikes and ground operations in various parts of Afghanistan over the past few months, with Afghans becoming more and more outraged over the seemingly endless number of deadly assaults.
Civilian casualties caused by the US-led NATO attacks have been a major source of tension between Afghan President Hamid Karzai and the military alliance.
Afghans have held several protests against NATO over the issue of civilian casualties.