Another drug shambles for Pete Doherty

Pete Doherty

Swedish police have fined Babyshambles frontman Pete Doherty after traces of cocaine were found in his blood following a concert at a music festival.

Police detained the British rocker after the concert because "he showed signs of being under the influence of narcotics".

Tests showed traces of cocaine and benzodiazepine, a tranquiliser Doherty had a prescription for.

He was fined 14,000 kronor ($3098.52) and released.