The Afghan National Defense and Security Forces (ANDSF) confiscated at least 50 rockets and 10 mortar rounds as the militants were looking to use them for a series of attacks in western Nimroz province.
The Ministry of Interior (MoI) said the rockets were seized during an operation in Chahar Borjak district of Nimroz on Thursday.
No further details were given regarding the arrest of any suspect during the operation.
The anti-government armed militant groups including the Taliban insurgents have not commented regarding the report so far.
Nimroz is among the relatively peaceful provinces in western Afghanistan but the anti-government armed militant groups are active in some remote parts of the province.
The discovery and confiscation of the rockets in Nimroz comes as the Taliban-led insurgency has been rampant during the recent months.