R&B singer Chris Brown postponed an upcoming European tour after officials in England refused to grant him a work visa, MTVnews.com reported.

According to BBC News, the singer was denied permission to enter the country due to his conviction stemming from the 2009 attack against former girlfriend, singer Rihanna.

“We reserve the right to refuse entry to the U.K. to anyone guilty of a serious criminal offense,” the British Home Office said in a statement. “Public safety is one of our primary concerns.”

Brown has been struggling to reclaim his career since his 2009 conviction. The singer was sentenced to 180 days community service, a year of domestic abuse counseling and five years’ probation.

The tour was supposed to begin in Glasgow, Scotland, and would have been followed by shows in Birmingham, Manchester and London.