Police were forced to intervene as scuffles broke out between far-right anti-Islam protesters and participants of a counter demonstration in Barcelona, following Thursday’s terrorist attack in the city.

Anti-fascist and far-right groups organized simultaneous protests in Barcelona just one day after a terrorist attack claimed the lives of 14 people and injured 100 more.

Scuffles broke out between the opposing groups merged near Las Ramblas at around 7pm local time.

Counter-protesters confront far-right 'Islamisation of Europe' rally in Barcelona after yesterday's deadly attack https://t.co/OrTz9b8uTdpic.twitter.com/FNBjPEuk48 — Ruptly (@Ruptly) August 18, 2017

The Spanish far-right group La Falange assembled close to the La Boquería marketplace in the city center, just 500 meters from where a van plowed into a crowd of pedestrians on Thursday.

La Falange blames “policies of multiculturalism” and immigration for the terrorist attack, for which Islamic State (IS, formerly ISIS/ISIL) has claimed responsibility.

The far-right group has more than 11,000 Facebook ‘likes’ and often shares anti-Islamic sentiment on its page.

Uneasy standoff on #lasramblas after right protestors and counter protestors take one another on causing panic #barcelonapic.twitter.com/eByOM48YYB — Melissa Bell (@MelissaBellCNN) August 18, 2017

The left-wing Catalan groups Arran and Endavant have set up counter-demonstrations in response to the march, and also began their protest near La Boquería.