Belgian media say a gunman shot dead two police officers and a bystander in the eastern city of Liege.
Two other people have been wounded.
State broadcaster RTBF said the shooting happened Tuesday near a cafe on the Boulevard d'Avroy.
The gunman fled the scene, taking a cleaning woman hostage at a nearby school, but he was later "neutralised," RTBF report, quoting police and fire services.
There was no immediate indication that the incident was terror-related.
