Among them were massive financial frauds in the purchase of buses and spareparts for the CTB.
Also, the CTB is yet to receive more than Rs. 240 million that is due as payments for the transportation of people to election rallies of former president Mahinda Rajapaksa.
Meanwhile, frauds running into millions of rupees had taken place in the sale of scrap iron and in the procurements at the railways department, investigations have revealed.
The secretary of the ministry during the period in question was well-known casino businessman Dhammika Perera.