The St. Paul Police Department says the shooting victim died in the Dacotah Building on Selby and Western Avenues. The restaurant W.A. Frost & Company occupies much of the ground floor.
It happened just after 4 p.m., in a second-floor office. The victim was pronounced dead at the scene, according to police, and the suspect fled.
That led to a search, which was picked up by the Chisago County Sheriff's Office around 9 p.m.
According to a news release, the office was informed the suspect, a 37-year-old male, might be in the area. Authorities then found his car traveling near Shafer – he refused to pull over, so deputies began a pursuit, the release says.
The suspect traveled about 11 miles south before other agencies joined in.
He was eventually stopped near Stillwater and arrested without further incident.
On Friday morning, St. Paul police on Twitter confirmed the suspect was in custody in connection to the killing.
W.A. Frost opened in the Dacotah Building in a one-time drugstore 40 years ago last month. Its arrival at the corner of Selby and Western in 1976 was seen by many as the start of a turnaround for St. Paul's Cathedral Hill neighborhood.