(Image: TWITTER)

Several people have been wounded outside the Turkish Consulate in the Belgian city.

Police were called to the scene at about 5pm.

One of the three victims was slashed in the stomach and is in a serious condition.

Turkish people were standing outside waiting to vote in the Turkish constitutional referendum, LaLibre.be reported.

The vote is over a decision on whether to grant Turkish President Recep Tayyip Erdoğan more powers.

According to reports three Kurds were attacked by supporters of President Erdoğan.

"We had to intervene because there were incidents, there were wounded and they were taken to be treated, and an investigation is under way," police spokesman Ilse Van de keere said.

(Image: TWITTER)

Demonstrators have gathered outside the building on Rue Montoyer.

Some Kurds have been taking part in a violent insurgency in Turkey in an effort to create an independent state.

Turkey has been accused of brutally suppressing them both in its border and in Syria.

Kurdish forces in Syria have been vital in battling ISIS militants.