Types of Evidence

Biological evidence refers to any evidence that is derived from a living organism, such as semen, blood, and tears. It can provide crucial information in forensic investigations.

Circumstantial evidence is evidence that relies on an inference to connect it to a conclusion of fact, such as a dead body found at a crime scene.

Physical evidence includes tangible items that can be collected at a crime scene, such as prints, glass, soil, ammunition, and firearms.

Class evidence refers to material that connects an individual or thing to a group, such as blood type, hair color, and manufactured fibers.

Individual evidence is unique and can be linked to a specific source, such as fingerprints or DNA.

Class evidence can only associate a sample with a group, while individual evidence can be traced back to a single source.

An example of class characteristics is a paint chip that can be linked to a manufacturer but not to a specific vehicle.

Direct evidence is evidence that directly links a suspect to a crime, such as eyewitness testimony or a confession.

Fingerprints are considered individual evidence because they are unique to each person and can be used to identify suspects.

Soil can be used as physical evidence to link a suspect to a crime scene, as it can contain unique characteristics.