Two persons of interest in Tomah homicide investigation in custody

Zachary Davis, Sebastian Martinez apprehended in Tennessee

Two people identified as persons of interest in a homicide at a Tomah hotel are now in police custody.

On March 11 at approx. 7:30 a.m., Tomah police officers responded to a medical call at the EconoLodge Hotel on N. Superior Ave.

Officers discovered the body of a man in one of the rooms. An investigation identified the deceased as Tomah resident Derek Magnuson.

Magnuson’s death appeared suspicious and an autopsy was ordered by the Monroe County coroner and completed at the University of Wisconsin-Madison Hospital.

The preliminary findings of the autopsy showed the cause of death was the result of penetrating trauma to the body from a knife or a similar pointed object.

The two people identified as persons of interest in the case were 26-year-old Zachary N. Davis and 20-year-old Sebastian Martinez.

Tomah police said Sebastian Martinez, who is known to dress as a female, is also known as Sabrina Martinez.

Police determined Davis and Martinez left Tomah and the state of Wisconsin after the homicide. Neither has ties to the Tomah area and were believed to be passing through Tomah at the time of the homicide.

Davis and Martinez were wanted by the Idaho Dept. of Corrections for prior probation/parole violations and information was eventually sent out to law enforcement agencies across the country to be on the lookout for them.

On March 22, Davis and Martinez were apprehended by authorities in Millersville, Tennessee. Both were apprehended on the probation/parole warrants and are currently being held in the Robertson County Jail.

The Monroe County Joint Investigative Task Force continues working on the investigation and said further details will be released when appropriate.