Three people have been killed and another seriously injured in a shooting outside the Jewish Museum in Brussels.

Belgian Interior Minister Joelle Milquet has tweeted to say he believes it was an "anti-semitic attack".

Two women and a man are thought to have been killed.

Sky's Robert Nisbet said a local website quoted witnesses as saying a car drove up to the museum and the driver and passenger got out and began firing indiscriminately at passers-by.

They then got back into the car and drove off.

Belgian Foreign Minister Didier Reynders heard shots and arrived at the scene moments later to find bodies on the ground.

"I am shocked by the murders committed at the Jewish museum, I am thinking of the victims I saw there and their families," he wrote on Twitter.

Police have closed off the area, and a number of ambulances are at the scene.