Janesville Police officers are stationed at 607 Tudor Drive in Janesville on Thursday afternoon.


A Janesville man has been arrested in a stabbing that injured another man Thursday afternoon on the city’s east side, police reported.

According to a news release, police arrested Justin G. Pennycook, 22, on suspicion he stabbed Dalton J. Rademacher, 19, in the abdomen and fled, then threw the knife into a nearby creek.

Police said they responded to a report of a stabbing at 12:23 p.m. Thursday and arrived at 607 Tudor Drive on the east side, where they found Rademacher in front of the residence with a stab wound in his abdomen.

It’s not clear who lives at the residence linked to the stabbing.

Pennycook fled, police said, and apparently threw the knife used in the stabbing into Spring Brook Creek at Ruger Avenue and Greendale Drive, near a bridge.

Police recovered the knife from the creek.

Within five minutes of being called out, police located Pennycook in his vehicle on South Randall Avenue and arrested him, according to the release. Rademacher had identified Pennycook as the person who stabbed him, police said.

Rademacher was taken to Mercy Hospital and Trauma Center. His condition was not immediately available.

Pennycook was arrested on suspicion of first-degree reckless injury with use of a weapon, according to the release. He was being held Thursday at the Rock County Jail.

Police said the stabbing happened after a “domestic incident” earlier Thursday between Rademacher and a female who shares a child with Pennycook.

Police didn’t give more details on the domestic incident or indicate why it would have led to a stabbing.

It was the second stabbing incident in Janesville in less than a week.

Christine Scaccia-Lubeck was found dead in her home Saturday afternoon with multiple stab wounds to her chest. Julian D. Collazo, 21, is charged in Scaccia-Lubeck’s death and is in police custody in Missouri.

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