At least four people are believed to have been killed in the Belgian city of Liege during a gun and grenade attack.

More than 60 people are also thought to have been injured in the incident, with reports suggesting a middle aged man threw grenades into the crowded Place Saint Lambert.

Named in the Belgian media as Nordine Amrani, the man was attempting to escape from police custody and is believed to have killed himself following the attack.

The public prosecutor said terrorism was not a cause of the incident and also quelled earlier reports suggesting two men had been involved.

Media reports suggest Amrani was jailed for nearly five years in 2008 for possession of firearms.