A female patient was reportedly sexually assaulted at Newham General Hospital, it has emerged.
The woman was allegedly attacked by a visitor while waiting in the A&E department.
Police were called to the hospital after the incident, which took place on July 1.
A Metropolitan Police spokesman said a 69-year-old man, of no fixed abode, has been arrested.
He was bailed to return to an east London police station on August 21.
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