LONDON (Reuters) - Troubled British soul singer Amy Winehouse has been released on bail after being arrested as part of an investigation into perverting the course of justice, police said on Wednesday.
The 24-year-old was bailed to return to a London police station in March pending further inquiries. She was arrested on Tuesday when she went to a police station by appointment.
"It was voluntary and pre-arranged," a representative at her publicity agency said, asking not to be quoted by name.
Winehouse's husband Blake Fielder-Civil is being held on remand accused of grievous bodily harm and conspiracy to pervert the course of justice.
Winehouse, nominated for six Grammy awards, has struggled with drugs and alcohol since shooting to fame.
She was pictured this month wandering the streets of London at dawn wearing only a bra and jeans.
The tattooed singer has cancelled all her remaining planned concerts this year saying she cannot perform while her husband is in jail.
Fielder-Civil, 25, was charged in November in an inquiry into perverting the course of justice, days before he was due to go on trial for beating up a bartender.
The trial was delayed after police launched an investigation into allegations made by British newspaper The Daily Mirror that the bartender was offered money not to testify.
Winehouse's parents have made repeated calls for their daughter to seek help, fearing that she could be sucked into a cycle of drug dependency.
"We want to help you, but we know that unless you want to be helped, unless you come to us, anything we tried would be in vain," her mother, Janis Winehouse, wrote in a letter published by the News of the World newspaper last week. "Early fame has overwhelmed you, it's dizzied you and muddled your mind."
Winehouse scored a hit last year with the song "Rehab" about refusing treatment for drugs and alcohol.
She and Fielder-Civil, who married earlier this year, were arrested and fined in Norway in October for possessing cannabis.
Reporting by Luke Baker and Peter Griffiths, editing by Kate Kelland