Boston Police Commissioner to Resign

After seven years

Commissioner Edward F. Davis, whose seven-year tenure leading the Boston Police Department has been marked by falling violent crime rates and seared by the Marathon bombings in April, will announce Monday that he is resigning, and he will pursue a fellowship at Harvard University, according to a person with knowledge of his plans.

Davis will leave his post in the next 30 to 60 days, his spokeswoman said, just as Mayor Thomas M. Menino's tenure is ending. The departure comes as some mayoral candidates have faulted Davis for what they see as his insufficient effort to diversify the police department.