The government of Belgium imposes a security lockdown on Brussels, including the closure of shops, schools, and public transportation, due to potential terrorist attacks.

The Federal Government of Belgium exercises executive power in the Kingdom of Belgium. It consists of ministers and secretaries of state drawn from the political parties which form the governing coalition. The federal government is led by the prime minister of Belgium, and ministers lead ministries of the government. Ministers together form the Council of Ministers, which is the supreme executive organ of the government.

From 21 to 25 November 2015, the government of Belgium imposed a security lockdown on Brussels, including the closure of shops, schools, public transportation, due to information about potential terrorist attacks in the wake of the series of coordinated terrorist attacks in Paris by Islamic State of Iraq and the Levant on 13 November. One of the perpetrators of the attack, Belgian-born French national Salah Abdeslam, was thought to be hiding in the city. As a result of warnings of a serious and imminent threat, the terror alert level was raised to the highest level (four) across the Brussels metropolitan area, and people were advised not to congregate publicly, effectively putting the city under lockdown.

Brussels, officially the Brussels-Capital Region, is a region of Belgium comprising 19 municipalities, including the City of Brussels, which is the capital of Belgium. The Brussels-Capital Region is located in the central portion of the country. It is a part of both the French Community of Belgium and the Flemish Community, and is separate from the Flemish Region (Flanders), within which it forms an enclave, and the Walloon Region (Wallonia), located less than 4 kilometres (2.5 mi) to the south.