Spain maintains level four alert after Brussels attacks

Spain will keep its terror alert at level four, meaning a real and imminent threat, after Tuesday's terrorist attacks in Brussels which has killed over 30 people and injured hundreds.

"We are threatened by terrorist groups. We are at a high level of risk and cannot lower our guard," Spain's Acting Interior Minister Jorge Fernandez Diaz said after two meetings, attended by the Committee to Evaleate Terrorist Threats and Spain's Anti-Jihad Pact respectively on Tuesday.

Tuesday was a "dark day for Europe," and four Spaniards were injured in the attacks, he added.

"Nobody is safe from these indiscriminate and brutal attacks," said Spanish Prime Minister, Mariano Rajoy.

Spain has been on level four (on a scale of five) since last June, which means the nation's security and intelligence services are on high alert, with extra protection for Spain's main infrastructure, such as power stations and airports and more police deployed to major public buildings.

Level five is activated only when there is intelligence related to an imminent terrorist attack on Spain. Endi