A former top executive at Deutsche Bank, who committed suicide in January, was worried aboutinvestigations into Germany's biggest lender, an inquest into his death heard on Tuesday.William Broeksmit, a 58-year-old American who was well-known in the world of banking and retired in February last year, hanged himself at his London home, the Royal Courts of Justice in London was told.He was "anxious about various authorities investigating areas of the bank where he worked," his psychologist said in written evidence heard by the inquest.Broeksmit was an advisor to the bank's senior leadership.Coroner Fiona Wilcox said the risk executive left several notes to "friends and family", which "show clear evidence of suicidal intent", while "there must have been planning and forethought".Citing the evidence from his doctor, she said Broeksmit had been sleeping badly in the middle of 2013 and his "self-esteem had been greatly undermined".However, in December, Broeksmit said he was feeling much better.Broeksmit worked twice at Deutsche Bank, first from 1996 to 2001 and then returning in 2008, serving in various senior roles until his retirement.A spokeswoman for the bank said Tuesday: "Bill was not under suspicion of wrongdoing in any matter."In English law, inquests are held to examine sudden, violent or unnatural deaths.They set out to determine the place and time of death as well as how the deceased came by their death. They do not apportion blame.- Dow Jones Newswires contributed to this report -