"Whoever breaks communal harmony...Strict action will be taken," Home Minister Rajnath Singh said while replying to questions.
He said people who try to disturb communal harmony will be given a "befitting" response.
At the same time, he said "health" of communal harmony cannot be measured on the basis of number of incidents.
Giving details of communal violence since October 2014, Minister of State for Home Affairs Kiren Rijiju said such incidents have "shown a decreasing trend during the last few months of the year 2014 from October to December 2014".
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Singh said he was not patting back of his government as the number of communal incidents were on the wane or criticising the previous UPA government for the increase during its regime.
Digvijay Singh (Cong) earlier raised the issue of provocative speeches to disturb communal harmony.
When a member referred to attacks on churches and violence in Trilokpuri area of Delhi last year, Rijiju said whether those were communal or not would be known only after investigation.
To related queries, he said Prime Minister Narendra Modi has already denounced communal statements.