A 44-year-old man shot his wife's co-worker, then turned the gun on himself as she watched outside her workplace in Roseville on Thursday afternoon, according to a preliminary investigation.
Both men died in the murder-suicide.
The woman was cooperating with investigators, Roseville police Lt. Lorne Rosand said.
Police were called at 4:15 p.m. on a report of a shooting, with two men down in a parking lot outside 1975 W. County Road B2, a few blocks west of Rosedale Shopping Center.
The co-worker, 33, was dead at the scene, which was in a rear parking lot of CPI Card Group. The shooter died about 6 p.m. at Hennepin County Medical Center in Minneapolis, Rosand said. No one else was being sought.
The men were found outside two vehicles belonging to them, he said, and a pistol was found on the ground near them.
Names of those involved were not released late Thursday pending notification of their next of kin.
The shooting was just behind CPI Card Group's Minnesota facility.