BJP leaders and workers held a sit-in in front of the Raj Bhavan accusing the BJD government of having "failed" to provide adequate security to Union ministers Santosh Gangwar and Sadhvi Niranjan Jyoti as well as former Jharkhand chief minister Arjun Munda at Bargarh on June 24.
A party delegation, led by state unit president Basant Panda, also submitted a memorandum to the Governor.
Terming the violent incident at Bargarh as shameful and deplorable, BJP National General Secretary and Odisha In-Charge Arun Singh said if no action was taken against those involved then the party would be forced to demand imposition of President's rule in the state.
First, the ministers were "warned" against visiting Odisha, which was followed by tearing of posters and waving of black flags, he said.
More From This Section
BJP leaders also alleged that the administrative inquiry ordered into the incident as an "eyewash aimed at sparing those involved in the attack".
The party had staged a statewide demonstration on June 29 accusing the state government of failing to take action against the culprits.
A BJP delegation is expected to meet the President to apprise him of the violence "perpetrated by BJD workers" at Bargarh, a senior BJP leader said.