Police shut down a busy Uptown crossing while investigators worked the scene of a homicide case and urged motorists to use other routes.
Deputies say the driver admitted she was behind the wheel in the January crash that killed 26-year-old Gage Chidester.
Police say the driver did not show signs of impairment as investigators work to determine what led to the deadly downtown collision.
Authorities said the trailer came loose from a truck and led to a fatal crash in Mathews County.
More than 45 million people are under heat alerts, while flood watches cover parts of the East and fire danger remains elevated in the West.
Warm, humid air will keep showers and storms in the forecast this afternoon and into early next week, with localized flooding concerns in western Virginia.
Police said the arrests came in two unrelated incidents late Thursday and early Friday after a tag reader hit and a citizen call helped officers respond quickly.
Federal authorities say the case centers on unpaid taxes linked to business income, with the arrest reported in South Carolina.
State investigators say forensic analysis linked the letters to the suspect, and the case now spans multiple Florida jurisdictions.
Metro Nashville Police said the driver ran a red light at Broadway and Fourth Avenue North just after 12:30 p.m. Saturday.
