"The opponents could not raise any corruption charge against the Narendra Modi-led BJP government and out of dismay, they are trying to exaggerate this isolated incident," Mr Rajasekharan said.
Last week, a leader, RS Vinod, was expelled from the BJP after an internal committee report showed he had taken Rs 5.60 crore bribe assuring Indian Medical Council accreditation for a private hospital.
The Kerala Vigilance Director had also ordered a probe into the corruption allegation on the same day.
On Tuesday, a BJP Minority Morcha in-charge Aslam Gurukkal, and six others were arrested for allegedly trying to threaten and kidnap a businessman in Kerala's Malappuram, according to the police, who said the reason for the attack will be known after the preliminary probe.
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