ISLAMABAD (AFP/Reuters) - Senior US General David Petraeus on Tuesday hailed important breakthroughs and detentions in Pakistan, following the capture of a top Afghan Taliban commander and reports of other arrests. The US General praised fight against militants as quite impressive, saying the counter-insurgency would be studied for years to come. He said Pakistan was running a classical campaign in the Swat Valley and South Waziristan. It is obvious that there have been a number of important detentions in Pakistan. It is very clear that there have been some significant intelligence operations, Petraeus told reporters in Islamabad. Although he declined to comment on specific cases, his visit follows the capture last month of Taliban military commander Mullah Abdul Ghani Baradar in Pakistan, in what the US media said was a joint operation with American spies. The New York Times reported Tuesday that Pakistani authorities have captured Mullah Abdul Kabir, a senior Taliban figure and top military commander fighting in the eight-year war against US forces in Afghanistan. But Pakistani officials told AFP they could not confirm the report, which said Mullah Kabir was detained in NWFP.