Authorities say DC gunman held long-standing feud with building management

The 55-year-old medical doctor harbored a long-standing grievance with the building’s condo association, according to court documents.

​The 55-year-old medical doctor harbored a long-standing grievance with the building’s condo association, according to court documents.  US The 55-year-old medical doctor harbored a long-standing grievance with the building’s condo association, according to court documents.