A 45-year-old man whom police believe killed four people in a “violent, execution-style manner” over the weekend in Oklahoma was arrested on Tuesday afternoon in Florida, authorities said. The suspect, Wu Chen, was taken into custody by the Miami Beach Police Department after a car-tag reader “flagged the vehicle he was driving,” according to a police statement. He faces charges of murder and shooting with intent to kill, and will be extradited to Oklahoma. The suspect and the victims “all know each other,” an Oklahoma State Bureau of Investigation official said on Monday. “Don’t know if they’re related, or if they’re co-workers, but certainly these individuals were, we believe, all familiar with each other.” At about 5:45 p.m. on Sunday, an assailant entered a building on a weed farm near Hennessey, Oklahoma, spending “significant amount of time” on the premises before “the executions began,” the state bureau said. Three men and one woman were fatally shot, while a fifth victim remained hospitalized on Tuesday, according to The New York Times. Officials said Tuesday that “because of a significant language barrier, next of kin notification is pending,” at which point the victims’ identities are expected to be released.