A Danish court convicted four men of planning a terror attack at a Danish newspaper's office for publishing cartoons of the prophet Muhammed.

Danish authorities arrested the four men in December 2010, hours before the attack was to take place in Copenhagen.

The court sentenced the four co-conspirators to 12 years in prison.

Surveillance recordings played during the trial revealed the men talking about martyrdom. Police also found two automatic weapons, 122 rounds of ammunition, and more than $20,000 in cash in their possession.

Denmark has been subject to threats by Islamic terror groups since the cartoons were published, which sparked riots and angry demonstrations in many Muslim countries.