Other than DNA at the crime scene , No motive given, no sexual assault, whats the connection between these 2?
The parents reportedly suspected him. Investigators said the murder appeared to be "personal" in nature...
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"Wounds on the teen’s hands showed she fought her killer, but the medical examiner’s office said Michelle was found fully clothed and had not been molested.
Detectives found no weapon or fingerprints to identify her killer, but said Michelle had not been robbed.
Based on the number of stab wounds – particularly to the young woman’s face – police considered the homicide personal in nature."
Albert and Janet Martinko died believing they knew who killed their daughter, but there was no evidence tying that man to the crime.
https://www.thedarksideofamerica.com/unsolved-michelle-martinko.html
They knew but could never prove it.
Pays to read article and posts
“Other than DNA at the crime scene , No motive given, no sexual assault, whats the connection between these 2?”
yeah, DNA all by itself with zero other evidence is unlikely to convict ...
I don’t understand either, what was the motive unless he just felt led to kill some random person?