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MENOMONIE, Wis. (AP) — Authorities say four people found slain in an abandoned SUV in a western Wisconsin cornfield had been shot and were all from Minnesota.

On Tuesday, Dunn County Sheriff’s officials said autopsies showed the two men and two women died of gunshot wounds.

Authorities don’t have a suspect or motive and believe the victims were randomly brought to the cornfield.

A father of one of the victims said the four were at a bar in St. Paul, Minnesota Saturday night, and said they got in someone’s vehicle when they left.

On Sunday, a 911 caller alerted deputies to the black SUV that was off a rural road in the Town of Sheridan, Wisconsin.

Sheriff’s officials said earlier there may have been a second dark-colored SUV traveling with the vehicle that was abandoned.