AT least one person is dead and eight were shot at a graduation party Sunday night in Philadelphia, the United States.

Four of those shot were between 15 to 17 years old, and four were adults believed to be in their 20s, Police Commissioner Richard Ross told reporters at a press briefing.

One of the adults died after being transported to the hospital, Ross said. That person has not yet been identified.

Authorities are investigating further. No motive has been determined. No arrests have been made.

Meanwhile, an Iowa Department of Public Safety employee, his wife and their two sons who were found dead in their home in a Des Moines neighborhood had been shot, U.S. investigators said Sunday. Police said the bodies of Chandrasekhar Sunkara, 44, Lavanya Sunkara, 41, a 15-year-old boy and a 10-year-old boy were found in their home Saturday morning. Autopsies were pending to determine the official causes of death, but police said all had gunshot wounds.

The Department of Public Safety said Sunday that Chandrasekhar Sunkara, who was known as Chandra, was a civilian information technology professional in the agency’s Technology Services Bureau. No suspect was reported to be in custody, but police said they were confident that there was no threat to the community. (SD-Agencies)