At least three people were killed and 14 others injured in a violent incident on the open road in the US in the state of Tennessee.
Early Sunday morning (local time), two people were killed by gunfire near a nightclub in downtown Chattanooga, local police chief Celeste Murphy said.
Another person died after being hit by a fleeing vehicle.
The incident came just two hours after a street shooting in the east coast city of Philadelphia left three dead and eleven wounded.
In Chattanooga, twelve other people were injured by bullets in addition to the three dead, and two other people were injured by fleeing vehicles.
Several of the injured are in a life-threatening condition, the police chief said.
After the crime in Chattanooga, there were initially no arrests.
According to Murphy, the shots were "definitely" fired by more than one perpetrator.
The background to the fact was initially unclear.
Several gunmen had recently fired into a crowd on a busy street in Philadelphia.
Even after this act, no suspect was initially caught.
There has been a series of particularly bloody gun attacks in the United States in recent weeks.
In mid-May, an 18-year-old shot 21 people at an elementary school in the small Texas town of Uvalde.
In response to the recent violence, US President Joe Biden last week called for new gun control laws, lamenting the many "everyday places that have become battlefields here in America."
The non-governmental organization Gun Violence Archive has recorded at least 240 so-called "mass shootings" in the United States so far this year, in which four or more people were injured or killed.
A cross-party group of senators met Thursday to discuss a package to improve firearms control.
In the past, however, the conservative Republicans had repeatedly prevented tightening of the lax US gun laws.