"To weaken the cooperative sector by all means, a small section of people with vested interests are even now making false allegations," he told reporters here.
BJP had alleged that cooperative banks in Kerala were the 'hub' of black money.
Surendran said the raids this week at Malappuram District Cooperative bank did not not unearthed any black money or brought to light any irregularity.
Denying reports he had huge deposits at Kadakampally Service Cooperative bank, the minister said he would welcome any search by Income Tax Department, CBI or Enforcement Directorate at the bank.