A judge has been told the man accused of assaulting pop star Leona Lewis is not fit to attend court. Skip related content
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Peter Kowalczyk, 29, was charged with punching the singer in the face during a book signing.
A hearing at City of Westminster Magistrates' Court heard he has been sectioned under the Mental Health Act and is being examined by psychiatrists.
Kowalczyk did not appear in the dock and remains in secure accommodation at Lambeth Hospital in south London. His solicitor said the results of the psychiatric tests would dictate what approach is taken next.
Leona, 24, had been signing autographs for about 90 minutes when a man lashed out at Waterstone's in Piccadilly on October 14.
The case has been adjourned until late November.
Yusuf Islam, the artist formerly known as Cat Stevens, is strolling back onto the stage after a break of 33 years.
