At least one masked gunman sprayed bullets in a nightclub popular with foreigners in Mali's capital early Saturday, killing at least five people including a French person and a Belgian national, officials and witnesses said.

France and Belgium condemned the attack at La Terrasse restaurant and bar in Bamako and their foreign ministers confirmed the deaths of their nationals.

Belgian Foreign Minister Didier Reynders denounced a "cowardly act of terror" and France's Laurent Fabius said "everything must be done to find those responsible for this crime."

The Belgian killed was security officer for the European Union, said EU president Donald Tusk. "The European Union will not be intimidated by terrorism, at home or abroad," said Tusk. "We will remain steadfast in support of Mali and its people."

Mali's president and prime minister visited the scene and called it "a criminal and terrorist act." A government statement said an investigation has been opened and pledged to bring the perpetrators to book.

"This attack was led by at least one masked person who opened fire on clients," said the U.N. stabilization mission in Mali in a statement.

It said nine people were wounded including two experts at the U.N. mission. The Swiss Defense Ministry said the two were Swiss soldiers.

Two people who were at the scene are being questioned to determine what happened, said a police officer who spoke on condition of anonymity because he is not authorized to speak to the press.

Two gunmen ran out of the nightclub and jumped into a car driven by an accomplice, said witness Hamadou Dolo. They ran into a police patrol about a block away and fired on the police car, killing its driver, a civilian in the street and a private security guard outside a house, said Dolo.

Mali police investigators and French and U.N. police officers visited the scene Saturday.

La Terrasse is in Bamako's Hippodrome neighborhood where many expatriates live and the nightclub is popular on a Friday night for salsa dancing.

French President Francois Hollande's office said five people had been killed and others injured and that security had immediately been tightened around French facilities. A statement from his office said the French embassy has set up a crisis cell to help expatriates in Bamako.

Hollande said that he will speak with Mali's President Ibrahim Boubacar Keita to show his support, much as the Malian leader visited Paris to show his support in the wake of the Charlie Hebdo attacks in January.

France immediately opened a judicial inquiry, a standard procedure when a citizen is killed which allows French officials to carry out a parallel investigation, according to a judicial official in Paris who spoke on condition of anonymity because she is not authorized to speak on the matter.

French forces led a military operation in early 2013 that largely expelled al-Qaida-linked extremists from a vast area they had controlled in northeastern Mali. The military operation in that region continues, and sporadic combat and clashes take place there. Violence has been rare in Bamako despite the continued upheaval in the north.