Actress Lindsay Lohan in custody to serve prison term

Actress Lindsay Lohan has started a prison sentence for violating her probation relating to a 2007 drug case.

The 90-day term was ordered earlier this month after Lohan failed to attend court-ordered alcohol education classes.

The former child star had been on probation since August 2007 after pleading guilty to misdemeanour drug charges and no contest to three driving charges.