Union minister Thaawar Chand Gehlot hit out at Congress and BSP for their attempts to draw "political mileage" from the incident and insisted that the Gujarat government had acted promptly.
The crime followed by the attempts of some Dalits to end their lives in protests has seen BSP and Congress launching sharp attack on BJP.
The community's votes are crucial in many states, especially Uttar Pradesh and Punjab, both of which are going to the polls next year. BJP has been trying to woo them vigorously since Narendra Modi came to power in 2014.
With the Opposition targeting the party's ideological fountainhead RSS over the matter, Gehlot, who has had a long stint in various RSS affiliates, said it had nothing to do with the matter and the criminals involved in it will be punished.
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He asked Congress Vice President Rahul Gandhi, AAP leader Arvind Kejriwal and BSP chief Mayawati not to visit the state due to the prevailing tense situation there and said any such trip will prove that they were interested in politicising it.
"In two months, charge sheet will be filed. Strong action will be taken. Senior state ministers have met the victims. We will give all assistance, including financial, to them," he said.
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Gehlot, addressing the press conference, said Opposition leaders like Rahul Gandhi, Mayawati and Arvind Kejriwal did not visit Kerala and Agra when Dalits were killed.
He alleged that Congress and BSP were doing politics with an eye on the Uttar Pradesh Assembly polls slated next year, and claimed Opposition parties raised similar issues before the Bihar Assembly elections last year and "forgot" about them after that.
Gehlot, a Dalit face of BJP, also appealed to the people of Gujarat to observe restraint and not to do anything that causes tension in the society and harms the country.
Dalits have been agitating in the state, protesting alleged inaction of the state government.
Congress has claimed that the violence against them was "BJP-sponsored" as it was trying to polarise communities ahead of the state election to be held next year.