The incident happened at around 3:15 am on Monday morning. Witnesses say that they heard two blasts.

The Antwerp Police Spokesman Willem Migom told VRT News that “On their arrival offices saw two possible points of impact on the pavement.

"The officers from judicial police lab and the bomb disposal service DOVO attended the scene. A dog trained to track explosives was also deployed so as to be certain that no other explosives were present. However, this proved not to be the case.

Police cordoned off the area and the area is being searched for possible clues. An Examining Magistrate is at the scene. Only once he has completed his work will the cordon be lifted.

There have been a number of incidents with hand grenades being detonated in Antwerp in recent months. Just last week a restaurant in den Brandt Castle in the Wilrijk area of Antwerp was damaged by a grenade explosion.