( CNN ) -- At least one person was critically injured Tuesday in Venezuela when police clashed with opponents of the government of President Hugo Chavez . According to CNN affiliate Globovision , violence erupted in the municipality of Mario Briceno Iragorry , in Aragua state , when the opposition tried to stop officers from confiscating election documents including voter lists . A man who was run over by a police tow truck was taken to the hospital in serious condition , Globovision said . The TV news network also reported that the man in charge of the local electoral board was detained . Acting on a ruling earlier Tuesday by Venezuela 's Supreme Court , Aragua police had confiscated lists of voters who participated in Sunday 's primary elections . The court had ordered that the lists be confiscated so that electoral authorities could use them to investigate alleged irregularities during Sunday 's elections . According to the Venezuelan government , the court acted after a candidate who participated in the primaries complained his rights had been violated . The Venezuelan Ministry of Communication identified him as Rafael Velasquez , a candidate for mayor in the town of Yaracuy . `` I have the right to ask for the voter lists to be reviewed , '' Vasquez said , according to a statement published by the ministry . `` I 'm asking for what is right . There were irregularities . I saw a polling place where there were more votes cast than voters who showed up to vote . '' But opposition leaders , including Bolivar state governor Pablo Medina , cried foul , saying the court 's ruling was an effort by the Chavez government to intimidate voters who participated in the primaries . Medina called the decision to confiscate the voter lists tantamount to `` state terrorism '' and told Globovision it would not stop the opposition from defeating Chavez in the October 7 presidential elections . `` We 're not afraid of what they may do , '' Medina said about government officials ' possible reactions . `` Above their actions , above the Supreme Court , above the government , above those institutions that have been sequestered , we 're going for total victory on October 7 in order to transform Venezuela into a democratic country . '' Opposition leaders cited the publication in 2003 and 2004 of the names of thousands of Venezuelans who had petitioned for Chavez to be recalled . Many of the names of those who appeared in the so-called Tascon List were subsequently targeted by the Chavez government , the opposition leaders said . Luis Tascon was a pro-government legislator who posted on his website the names of people who had signed a petition to remove Chavez . His said his rationale was that a Venezuelan could look at the postings to determine whether his or her signature had been forged . But a study published last April in the American Economic Journal : Applied Economics supported the concerns of the opposition . Lead author University of Chicago economist Chang-Tai Hsieh concluded that signers of the 2003 recall petition whose names were subsequently made public saw their earnings drop by 5 % on average and their employment probability drop by 1.3 % when compared to those who did not sign the petition . That finding `` is strongly suggestive that the main instrument of political retaliation '' was the widely circulated database that contained the list of signers , the authors concluded . Opposition attorney Omar Arevalo told Globovision that he was surprised when he saw the court 's ruling . By law , Arevalo said , the voter lists are supposed to be destroyed as early as 48 hours after the election , which expired Tuesday . `` We had a commitment since before the February 12 primaries to destroy the lists by burning them . This was to protect the identities and the rights of ( opposition ) voters because our country has lived very regrettable situations like the Tascon List , '' Arevalo said . More than 3 million voters participated in Sunday 's primary elections , twice as many as expected . Henrique Capriles Radonski , the 39-year-old governor of Miranda state won the primary with more than 60 % of the vote . Capriles will run for the presidency against the incumbent Chavez , who has been in power for 13 years . In a statement , the opposition group Unity Venezuela said many of the records had already been destroyed . The group 's executive secretary , RamÃ³n Guillermo Aveledo , said lawyers were `` already studying '' ways to oppose the Supreme Court 's decision , which he called `` absurd , unconstitutional and disproportionate . ''
At least 1 critically hurt when opposition tries to stop confiscation of voter lists . The Supreme Court ordered the election documents not be destroyed . An opposition leader calls the decision tantamount to `` state terrorism '' and says it will lead to more violence in Venezuela.