Reports of Boko Haram attacks continued this month, with sources suggesting that the insurgent group was trying to expand its activities into Nigeria's commercial capital Lagos. Despite this trend, Nigeria's security agency announced the arrest of 20 prominent Boko Haram members, and also reaffirmed that the December deadline to eradicate the insurgent group's power was on track. In August, President Muhammadu Buhari also appointed an advisory committee largely consisting of academics to help him tackle corruption and reform the legal system. In an effort to boost security against Boko Haram, and to lower youth unemployment, President Buhari announced plans to recruit an additional 10,000 police officers to Nigeria's police force, and to add further CCTV cameras in major towns and cities. As part of President Buhari's efforts to rid Nigeria of corruption, the leadership of the country's custom service, immigration office, armed forces and state-owned oil company were shaken up by firings or suspensions. Ibrahim Lamorde, the chairman of the Economic and Financial Crimes Commission publicly denied allegations this month that $5 billion was diverted from the EFCC under his leadership. Nigeria's Central Bank has officially banned foreign cash deposits into customers' domiciliary accounts to protect the strengthening naira. Reports of Nigerian oil refineries and pipelines temporarily shutting down also surfaced this August, reaffirming the country's need to improve its oil extraction methods, as Nigeria largely relies on imported oil currently.