UK Prime Minister Andy Burnham has called for “reflection” following the death of former Cambridge University professor Jason Arday, as his family accused him of enduring years of harassment amid plagiarism allegations.

Arday, 41, was found unresponsive at an address in south London on Friday, nine days after resigning from his position as a professor at Cambridge University and fellow of Jesus College.

The Metropolitan Police said the death was being treated as unexpected but was not believed to be suspicious. A file is being prepared for the coroner, who will determine the cause of death at an inquest.

Cambridge Vice-Chancellor Deborah Prentice confirmed Arday’s death in a brief statement, describing the news as “tragic”.

Speaking to reporters in southwest England on Saturday, Burnham said the circumstances surrounding Arday’s death should not be subjected to hasty conclusions.