is this legal?

Okay I got a few questions. Heres a little background on the situation
a
year and a half ago my girlfriend had pressed charges against a person
in
which my girlfriend was talking with a state trooper detective she had
decided that she was going to drop the charges so she went done to the
police station. When the detective dropped her off back at the
apartment, He
asked if he could come in to our apartment she told him no and he
continously started accusing us of having drugs stashed up in our
apartment.
At the time my girlfriend was 5-6 months pregnant. In which he started
to
make her very emotional saying that we our drug addicts and bad
parents. So
he made her cave in to letting him in our apartment. A little about the
drug
thing he had no probable cause to believe that either of us were on
drugs or
selling/growing them. Once in our apartment he looked around and seized
our
computer saying that is was part of a criminal investigation. Now
during
this year and a half the detective has made several threats saying that
he
was going to run me over and throw me over the gorge to my in-laws and
to
me. Then I just got a call from another detective the other day stating
that
they found stuff on my computer and wanted to talk to me about it. Now
if
anything ammounted from the seizure of the computer wouldnt it be
emissable
due to there was no search warrant obtained and the way he entered my
apartment by intimidating and emotionally harassing my girlfriend into
letting him in. Also, due to that multiple people used the computer if
anything was found on it could they actually accuse one person of it
and
charge them on the only evidence that they have is a lab report of what
was
on the computer through ip address. I am clueless to what they found or
what
they want to talk to me about but I want to be acknowledged about the
laws
around this. So the main thing I want to know was the seizure of the
computer done legally and if multiple people used the computer and no
one
confesses to what they found on it can they a!
ctually
just charge somebody

[able1]

You may want to file a complaint with the chief of the dept to make sure there is some oversight on this matter.

But it can be seized and evidence on the computer would have to be one part of other evidence if it cannot link to one person.