From the BBC:

Danish police have arrested five people suspected of planning to attack a cartoonist who drew caricatures of the Prophet Muhammad.

Denmark's intelligence agency (Pet) said the arrests were made in the Aarhus region at 0430 (0330 GMT) "to prevent a murder linked to terrorism".

Three of those detained were Danes and the other two were foreigners.

The pictures in Denmark's biggest daily newspaper Jyllands-Posten in September 2005 sparked a worldwide furore.

Muslims regard any visual representation of Muhammad as blasphemous.