The Madison Police Department issued more information on Monday about their ongoing investigation into the homicide of Joel Marino in his south side residence on Monday, January 28. Specifically, the knife recovered at the scene had male DNA on it that matches that found on two other articles left near the scene and recovered after the homicide.
As detailed in the release:
Based on forensic analysis performed by scientists at the Wisconsin State Crime Lab in Madison it has been determined that male DNA found on a knife recovered at the crime scene matches DNA found on a white cap and a backpack recovered shortly after the murder. Detectives believe the DNA belongs to Marino's killer.
On the day of the homicide, investigators believe Mr. Marino was home all morning and was stabbed in his house between 1:00 p.m. and 1:20 p.m. In addition the probe indicates the suspect likely fled the Marino home and ran southbound on West Shore Drive. During his flight he discarded the white cap and Puma backpack in the West Shore neighborhood. The perpetrator was last seen near the intersection of South Park and Parr Streets.
The knife -- which is believed to the murder weapon -- is described as an "OXO" brand paring knife with a four inch silver blade. A photo of the knife has been attached to this release.
Detectives working the Marino case have determined the recovered backpack was bought at a State Street business on the afternoon of Friday, January 25th. The assailant is believed to be the person who made the purchase.
Police believe the perpetrator MAY live in, or perhaps associates with, the State Street area. He is described as a white male, 5'10" - 6'2", in his 20's, with a thin build. He was last seen wearing a tan Carhartt type jacket.
Photos of the knife, hat and backpack are available in the gallery at top right.
The reward for information leading to an arrest and conviction in the homicide is still at some $42,000. Persons wishing to share any tips on the case are encouraged to call submit them online.