The two were at a gas station in Riyadh when a gunman opened fire on their car, the country's official news agency reported, citing police.
The Saudi Embassy in the United States identified the suspected gunman as Abdulaziz Fahad Abdulaziz Alrashid, 24, a dual Saudi-American citizen who had worked at the same U.S. defense contractor as the victims.
He was recently dismissed from the job "due to drug-related issues," the embassy said.
Alrashid was reportedly taken into custody following a shootout with security forces, which left him injured.
Neither the Americans' names nor information about a possible motive was immediately released.
By Ruchi Singh
reporter
Park Sae-jin
swatchsjp@ajunews.com
