05/07/2003 at 12:00 AM EDT
The Who guitarist Pete Townshend has been cleared by British authorities of possessing pornographic images of children, but he was still formally cautioned by police for accessing a pedophile Web site, reports Reuters.
The 57-year-old musician and co-founder of the legendary rock band reportedly appeared at a London police station Wednesday where he was fingerprinted, photographed and provided a DNA sample.
He also will be placed on the Sex Offenders Register for five years, the BBC reports.
The warning marked the end of a four-month investigation of Townshend by Scotland Yard, which told Reuters that the musician had "fully cooperated" with its probe after he allegedly accessed an American Web site offering obscene images of minors.
In January, when the investigation began, Townshend was one of 1,600 people arrested in the UK as part of "Operation Ore," concerning child porn on the Internet. At the time, police removed computers from Townshend's home in Richmond, Surrey.
Townshend was released on bail after admitting he had provided his credit-card number to the site. He insisted that he was doing research into abused children for a book he was intending to write.
In a statement, Scotland Yard said: "It is not a defense to access these images for research or out of curiosity."