Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. More than 460 Injured During Catalonia Independence Referendum by VOA News More than 460 people are being treated for injuries caused by Spanish police clashes as voters in Catalonia cast ballots for or against independence. "As mayor of Barcelona I demand an immediate end to police charges against the defenceless population," Ada Colau said Sunday. Madrid said Sunday it wants to bring a halt to the independence referendum, calling it a "farce." Spain's central government says the vote is illegal. Police reportedly have fired rubber bullets, and clashes have broken out with protesters across the northern state. Meanwhile, Barcelona's football game against Las Palmas has gone ahead behind closed doors, despite requests to the league to postpone. Madrid's representative in Catalonia, Enric Millo, said Catalonia's president Carles Puigdemont and his team "are solely responsible for all that has happened today and for all that can happen if they do not put an end to this farce." WATCH: Clashes Between Police and Protesters Police seized the ballots of at least one polling station and Spain's interior ministry said on Twitter more ballot boxes would be snatched as police continued their deployment in Catalonia. Police in riot gear smashed the front door of a polling station with a hammer Sunday in Catalonia where Puigdemont was expected to cast his vote in the banned independence referendum. Scuffles between the police and voters erupted outside the polling center in Sant Julia de Ramis, near the Catalan city of Girona. A regional government spokesman said voters could cast their ballots at any polling station, instead of their designated one, since Spanish authorities have sealed off some polling stations. A Catalan spokesman says 73 percent of polling stations are open, but their computer system is suffering constant hacking attacks. Catalonia's government spokesman Jordi Turull called on Catalans to continue to carry out their right to vote "in a civic and peaceful manner." Turull said the police actions are reminiscent of the "repression that is a reminder of the Franco era," a reference to Spain's dictatorship from 1939 - 1975. Hundreds of people in favor of the referendum camped out in schools and other designated polling places in an attempt to keep them open for Sunday's vote. Millo, the highest-ranking Spanish security official in the northeastern region, said Saturday police had blockaded half of the more than 2,300 polling stations designated for the referendum vote. He said Spanish authorities also had dismantled the technology Catalan officials had planned on using for voting and counting ballots, which he said would make the referendum "absolutely impossible." Catalan officials said they would move forward with the vote despite the actions taken by Spain's central government. Spanish Culture Minister Inigo Mendez de Vigo said Friday the independence vote violates Spanish law and the government will not accept the results of the referendum. Catalonia represents a fifth of Spain's $1.32 trillion economy and enjoys wide self-government. The region has about 5.5 million eligible voters. It is not clear if the Catalans would vote for independence.