Colorado has three different witness tampering offenses: bribing a witness, intimidating a witness, and retaliating against a witness. I think the bribing offense might fit the circumstances:I don't know the law on this but, at the time they made those comments to MG, BM hadn't even been charged with anything. So technically, MG wasn't even a witness yet. I'm not sure if it works this way so maybe one of our legal professionals can chime in on that one?
Colorado Revised Statutes § 18-8-703. Bribing a witness or victim
(1) A person commits bribing a witness or victim if he or she offers, confers, or agrees to confer any benefit upon a witness, or a victim, or a person he or she believes is to be called to testify as a witness or victim in any official proceeding, or upon a member of the witness' family, a member of the victim's family, a person in close relationship to the witness or victim, or a person residing in the same household as the witness or victim with intent to:
(a) Influence the witness or victim to testify falsely or unlawfully withhold any testimony; or
(b) Induce the witness or victim to avoid legal process summoning him to testify; or
(c) Induce the witness or victim to absent himself or herself from an official proceeding.
(2) Bribing a witness or victim is a class 4 felony.
I don't believe that charges have to be filed before a person can be considered a witness (see bolded text of the statute below.
Colorado Revised Statutes § 18-8-702. Definitions
The definitions contained in sections 18-8-301 , 18-8-501 , and 18-8-601 are applicable to the provisions of this part 7, and in addition to those definitions:
(1) “Victim” means any natural person against whom any crime has been perpetrated or attempted, as crime is defined under the laws of this state or of the United States.
(2) “Witness” means any natural person:
(a) Having knowledge of the existence or nonexistence of facts relating to any crime;
(b) Whose declaration under oath is received or has been received as evidence for any purpose;
(c) Who has reported any crime to any peace officer, correctional officer, or judicial officer;
(d) Who has been served with a subpoena issued under the authority of any court in this state, of any other state, or of the United States; or
(e) Who would be believed by any reasonable person to be an individual described in paragraph (a), (b), (c), or (d) of this subsection (2).