Authorities said the crime scene was extensive and that it will take some time for detectives to work it. The shooting comes amid gatherings around the country leading up to the July Fourth holiday.
Nine people were wounded in a mass shooting in San Francisco's Mission District on Friday night in what police said appeared to be a "targeted and isolated" incident.
Many chanted slogans decrying Serbia's president, whom they blame for creating an atmosphere of hopelessness and division they say indirectly led to the two mass shootings that killed 17.
The weapon used to carry out the mass shooting in Allen, Texas, is one all too familiar to Americans and lawmakers who have witnessed mass shootings occur quite frequently this year.
Police in Allen, Texas, said the gunman was among dead after he was killed by a nearby officer. Three of the wounded victims are in critical condition.
A 39-year-old woman was killed and four other women were injured after a gunman opened fire in a downtown Atlanta medical office building, police said.
The U.S. sees hundreds of mass shootings each year — so many that some people have survived more than one. A therapist offers advice for how to cope with the trauma.
Authorities say they are searching for a motive for the deadly mass shooting that took place over the weekend in a city east of Los Angeles at the beginning of the Lunar New Year.