The party also blamed the Narendra Modi government for encouraging right wing groups who have been "talibanising" the country.
"The right-wing group which dared to do the horrible act undoubtedly draws its power and strength from the BJP led coalition in power. Ever since BJP came to power at centre, several such acts of radical elements hijacking the law and playing moral police have come to the light," the party said in a statement.
"The Modi government is helping right wing groups in talibanising the country and the flourishing of such groups are an example of this," the party said in a statement.