"The programme has been banned and a case under IPC booked against Dravidar Kazhagam President K Veeramani in connection with this," Assisstant Commissioner of Police (Vepery) Ayyappan told PTI.
The event has been banned as there were chances of it instigating hatred among communities, being detrimental to communal harmony and breaching public peace and tranquility. Also, a proper permission was not obtained, police said.
Strongly opposed by Hindu outfits, the event was announced by DK after a Tamil news TV channel last month cancelled a programme "Thaali (Mangalsutra) a boon or bane" following protest from Hindu Munnani, a Sangh Parivar outfit.
"Beef banquet" was announced as a mark of DK's opposition to the idea of banning cow slaughter, beef-eating and a related recent ban in Maharashtra.
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In a violent fallout of the Mangalsutra issue, a fringe Tamil group attacked the channel's office here, hurling crackers on March 12, which evoked widespread condemnation from political parties and media bodies.
Reacting to the ban, Veeramani in a statement said they would legally challenge the police action.
"Legal steps are being taken against the police order banning the event," he said.
On a petition filed opposing the DK event, the Madras High Court had recently asked the petitioner to approach the police and ordered that action may be taken by police in accordance with law if there was a prima facie case.