Amy Winehouse arrested

LONDON (Reuters) - Troubled soul singer Amy Winehouse was arrested on Tuesday as part of an investigation into perverting the course of justice, London police and her publicist said.

The 24-year-old, whose husband Blake Fielder-Civil is being held on remand accused of inflicting grievous bodily harm and conspiracy to pervert the course of justice, went to a London police station to be arrested in agreement with police.

"It was voluntary and pre-arranged," a representative at her publicity agency said, asking not to be quoted by name.

In a statement, the Metropolitan Police said: "A 24-year-old woman has been arrested by appointment at an East London police station in connection with an investigation into perverting the course of justice. She remains in custody."

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 in 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 investigation 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 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 drugs and trauma.