Unsolved homicides in the region occurred as recently as last year and as long ago as the 1850s, according to law enforcement officials trying to unravel the puzzles.

The unsolved cases are:

JUNE 1989 -- The body of Peter Kapitula, 32, was found in a shallow area of the Zumbro River near Rock Dell. He had been shot three times. Officials believe robbery was the motive. Kapitula was described as a transient who had lived in the area only a short time.

JUNE 1985 -- Ada Senenfelder, 44, of Winona, was found stabbed to death in her home. Officials believe she knew her murderer because there was no sign of forced entry to the home. She died of multiple stab wounds and was found lying on a bed against a window.

DECEMBER 1976 -- Claire Verhelst's frozen body is found in a rural Rochester ditch. Her throat had been slashed. Only four days earlier, she had been released from the Rochester State Hospital and was planning to return to her home in Owatonna.

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DECEMBER 1975 -- Lake City Mayor Wilmer Strickland, 58, and his wife, Verona, 52, were shot to death in their home. Their bodies were discovered by a son who was delivering Christmas packages. Strickland was shot five times and his wife once. Authorities have been unable to come up with a motive or suspect.

NOVEMBER 1974 -- Mrs. Mabel Torgerud, a retired Peterson area nurse, was found shot to death in the kitchen of her home. Authorities believe she was shot while working in her garden and then dragged inside. Robbery may have been a motive. She was 69.

FEBRUARY 1971 -- Joseph Novak, 60, a rural Mantorville resident, was found shot to death in his farm home. A 15-year-old boy was arrested, but released after being held for 86 days. The youth had been one of three juveniles who went to the Novak home from a Mantorville beer party. Novak was shot six times in the head and once in the chest.

AUGUST 1958 -- Herbert C. Hanson, a retired Mayo Clinic collector who was working as a night attendant at the former Swede Larson's Shell Station on Fourth Avenue Southeast and U.S. 14 was shot to death. A robber stole $104 from the cash register. A customer found Hanson's body in a storage-utility room. Hanson lived only a few houses away. The murder weapon has never been found.

SPRING 1858 -- A man known only as Ashenherst was stabbed to death in the basement of a Rochester saloon. According to historical accounts, Ashenherst and another unidentified man had been playing cards and got into an argument. Ashenherst was stabbed and the other man fled and was never captured.