COPENHAGEN — Danish newspaper Jyllands-Posten, which angered Muslims by publishing cartoons of the Prophet Muhammad 10 years ago, has stepped up security after Wednesday's attack on the satirical magazine Charlie Hebdo in Paris. Jyllands-Posten published 12 cartoons by various artists in September 2005, most of which depict the Prophet Muhammad. It sparked a wave of protests across the Muslim world in which at least 50 died.

"As a result of the attack on Charlie Hebdo we have tightened security levels," Stig Kirk Orskov, chief executive of media group JP/Politikens Hus, which controls Jyllands-Posten, wrote in an email to employees seen by Reuters. Orskov added that the company is in close contact with Danish authorities.

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— Reuters