"The surgical strike took 10-15 days of preparations. Please do not presume that nothing is happening (from our side) on behalf of the government," Singh said.
He was speaking at the 'Samvaad' conclave on India TV news channel.
"I can say this much for now that we will not allow our countrymen to hang their heads in shame," Singh added.
Replying to a question on beheading of two Indian soldiers by Pakistani troops earlier this month, Singh said that people in the government also feel the pain of the countrymen.
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When asked whether the army should again cross the border and retaliate against the terrorists, Singh said, "I should not react (to this question). The one who brags too much, never does...We will not announce in advance, we will do it".
Speaking on the brutal killing of Kashmiri army officer Ummer Fayaz, the home minister said whatever happened to him has caused pain to all Indians, including Kashmiris.
Fayaz was a role model for youth in the valley, he added.