DNA transfer in an office space visited by an intruder after resumed use by the owner

Knowledge of DNA-TPPR in various settings and circumstances can aid sample targeting and collection, interpretation of DNA profiles, and activity level assessments. The present study looks at a number of items/surfaces in a single-use office space that was sequentially used for one hour by the owner, a temporary occupant (intruder), and the owner (3h total). Video recording allowed evaluation of contacts made by participants to assist targeted sampling. In a majority of samples, the owner of the office space was the major contributor regardless of the last person to have contacted an item/surface.

Source: Forensic Science International: Genetics Supplement Series - October 25, 2022 Category: Forensic Medicine Authors: Monique Zacher, Roland A.H. van Oorschot, Oliva Handt, Mariya Goray Source Type: research