In addition to these, the government of Goodluck Jonathan had several running scandals including the BMW purchase by his Aviation Minister, to the tune of N255 million naira and security contracts to militants in the Niger Delta, massive corruption and kickbacks in the Ministry of Petroleum, the Malabu Oil International scandal, and several scandals involving the Petroleum Ministry. In the dying days of Goodluck Jonathan's administration, the Central Bank scandal of cash tripping of mutilated notes also broke out, where it was revealed that in a four-day period, 8 billion naira was stolen directly by low-level workers in the CBN. This revelation excluded a crime that is suspected to have gone on for years and went undetected until revealed by a whistle-blower. The Central Bank claims the heist undermined its monetary policy. In 2014, UNODC began an initiative to help combat corruption in Nigeria.