According to the local government officials, the militant was arrested by the Afghan intelligence operatives and has been identified as Abdul Ghani.
The officials further added that the militant was involved in killing key government officials in Kandahar province, including the killing of a female police officer in 13th police district of the city.
The detained militant has confessed he has carried out numerous attacks on government employees and officials in this province.
The local officials have said the Afghan intelligence operatives intervened amid growing attacks on government officials that led to the capture of Abdul Ghani.
The anti-government armed militant groups have not commented regarding the report so far.
The female police officer was working with the provincial passport department when she was shot dead by the militant in Kandahar city last month.