In Ohio in the US, Dayton Police say 9 people have died after being shot at a bar in the Oregon District.
They're appealing for witnesses and say on their Twitter account that they are still dealing with a "large scene".
People are being told to avoid the area.
It comes only hours after 20 people were shot dead at a shopping centre in El Paso, Texas.
This is the latest tweet Dayton Police:
#OregonDistrict #update Lt. Col. Carper: at 1:22am active shooter situation began in oregon district. The shooter is deceased. There are 9 others also deceased. At least 16 others went to area hospitals with injuries.
— Dayton Police Dept. (@DaytonPolice) August 4, 2019