<GILA BEND, Ariz. D-P-S officers says four people were killed and six others injured in a rollover accident south of Gila Bend last night. Medical helicopters were sent to the crash scene about 30 miles south of Gila Bend to fly the injured people to various hospitals. Details of the accident were sketchy and the D-P-S did not comment on initial reports that the crash may involve a vehicle that was carrying a load of undocumented immigrants. The identities of the people killed were not immediately released.