More than 460 people have been injured in the Spanish police crackdown, Barcelona’s mayor has said. Officials say that some of the voters have sustained “serious” injuries.

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People with blood-stained bandages, some dressing head wounds, were seen near polling stations.

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In Barcelona and in Sant Julia de Ramis, near the Catalan city of Girona on Sunday, dozens-strong armed police units could be seen violently engaging with voters.

In Barcelona's Guinardo Market, police clashed with voters outside a polling station as people lined up to cast their votes in the referendum the Spanish government had deemed illegal. 

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Both men and women could be seen being violently pushed out of the building and thrown to the ground, as other people tried to assist those in pain.

At another polling station in Barcelona's Carrer de Pau Claris, policemen could be seen mercilessly pushing voters down a flight of stairs and dragging others outside the hallway. Others were beaten by officers in riot gear, as screams echoed through the polling station.

READ MORE: Catalonia: Police firing rubber bullets in clash with voters (VIDEOS, PHOTOS)

There have been reports of rubber bullets and batons being used against voters. 

In another video filmed at a polling station in Sant Julia de Ramis near Girona police can be seen storming into a building, breaking its glass doors. While some poll organizers attempted to flee with materials apparently related to the referendum, security forces conducted searches and took away plastic bags stuffed with unverified materials.

Video mandatory credit: ACN