British rock singer Pete Doherty has been sentenced to 14 weeks in jail for violating a probation order.

His record company says the sentence handed down Tuesday by a London court means the Babyshambles frontman's planned concert at Royal Albert Hall on April 26 would be postponed.

Parlophone Records didn't say how the rocker broke his probation. But music magazine NME cited a court spokesman as saying Doherty had used different kinds of drugs, breached "time keeping" and generally not complied with his probation.

Doherty's drug use has frequently landed him in court. Last year he pleaded guilty to possession of crack cocaine, heroin, ketamine and cannabis and a variety of driving offenses.