Four people who were executed Sunday at an Oklahoma marijuana farm were Chinese nationals, state authorities confirmed Tuesday afternoon.
Three men and a woman — all Chinese nationals — were executed at 5:45 p.m. Sunday after a male suspect entered a building in a marijuana operation in Kingfisher County, Oklahoma, authorities said.
An additional victim, also from China, was injured and airlifted to a metro hospital, according to the Oklahoma State Bureau of Investigation (OSBI).
Due to a “significant language barrier,” next-of-kin notification is pending, OSBI said in a press release.
Authorities said earlier Tuesday that they had a “suspect in mind” and that the killing appeared to be a random incident. They did not disclose how the suspects were killed.
Law enforcement said they are not releasing the suspect’s identity because it would put additional people in danger. The case is being investigated as a quadruple murder.
The farm is about 10 acres, west of Hennessy, about 55 miles northwest of Oklahoma City.
Marijuana was legalized in these states during the midterm elections
Oklahoma State Bureau of Investigation Capt. Stan Florence said the Kingfisher County Sheriff’s Office initially responded to a reported hostage situation at the farm but requested assistance from state authorities.
Police searched the property using drones, helicopters and the ground on Sunday and Monday but did not find the suspect, Florence told reporters.
“There’s a lot to unravel with this case,” he said. “It will take us some time to process it.”
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Oklahoma voters legalized medical marijuana in 2018, and the industry has grown thanks to open laws that impose fewer restrictions than other states.
In March, voters will decide whether to legalize recreational use of the drug.
The Associated Press contributed to this report.