"The operation was intensified last night and since then there are over 57 Taliban fighters killed, wounded and captured," army commander General Shahzada -- who goes by one name -- said.
"Unfortunately, four Afghan army soldiers have been killed and 3 others were wounded during the operation since last night".
There are around 130,000 NATO-led international troops fighting the near decade-long Taliban insurgency.
A limited withdrawal of foreign troops is expected to begin in July, ahead of a planned transition of responsibility to Afghan security forces due to be completed by end of 2014. (*)
Editor: Kunto Wibisono
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