BJP leader Ravi Shankar Mijar, speaking at the protest organised by the party before the Deputy Commissioner's office, demanded arrest of the alleged abettors in the case.
He said Ganapathy was an honest police officer and alleged that harassment by a former Home Minister and two senior police officers had led to his suicide.
Speaking to protestors in front of the DC office, Dakshina Kannada district president of the 'Karnataka Rakshana Vedike' Anil Das said persons named in the DySP's pre-death declaration should be arrested.
Dakshina Kannada district JDS president, Mohammed Kunhi told reporters at a press meet here that the suicide was an example of the "anti-people" policies of the Congress government.
The Karnataka government has handed over to CID the investigation into alleged suicide of the Mangaluru DySP which has triggered a storm with the police official in his pre-death declaration accusing a senior minister and two top officials of harassing him.