Bavaria, who contested Parliamentary polls to retain his Rajkot seat, went to vote in Vinchhiya town, wearing a scarf with the Congress election symbol.
The Rajkot BJP unit had urged the district Election Commission to register a case against Bavalia for breaching the model code of conduct.
"We have registered an FIR against Bavaliya in Vinchhiya police station after getting a direction by district Election Commission officials," a senior police official at Vinchhiya police station said.
This is the second complaint filed against Bavalia.
Earlier, BJP's Jasdan palika president Munnabhai Sojitra had filed a complaint against Bavaliya for threatening to kill him a couple of days ago.
Image: Kunvarji Bavaliya
Will BJP's caste gamble pay off in Rajkot?
Priyanka will only get TRPs, not change fortune of Congress: Amit Shah
Modi dares Election Commission to 'lodge another case' against him