Several hundred migrants, in the presence of supporting demonstrators, broke into the northern French port of Calais, tearing down barriers and allowing about 50 of them to board a ship, the mayor said Saturday.<br />Thirty-five people were arrested, the Pas-de-Calais prefecture said, according to CNN affiliate BFMTV.<br />The prefecture said that 24 of those arrested are migrants and 11 are members of the pro-migrant activist group No Borders, according to BFMTV.<br />About 110 migrants were removed from the port zone.<br />The incident disrupted ferry traffic between Calais and Dover, England, for up to two hours, the British firm P&O Ferries said via Twitter.<br />The port was temporarily closed, according to a Twitter post by another British ferry company, DFDS Seaways.