Jason Arday, the former Cambridge University scholar whose remarkable rise to stardom was followed by a rapid fall from grace in recent weeks, has died, his family said on Friday.

“Jason was subjected to a campaign of sustained abuse” in the years since he accepted a role at Cambridge, his family wrote in a statement. “The campaign of misinformation was too much for Jason, who was a gentle man and who always wanted to see the best in everyone.”

The Metropolitan Police of London said that an ambulance was called on Friday afternoon to a South London residence connected to Mr. Arday after a report that a man there had been found unresponsive. The man was pronounced dead at the scene, the police said, without confirming his identity, in keeping with British police practice.

The death was being “treated as unexpected” but was not believed to be suspicious, the police said.