Greitens has maintained his innocence of any crimes and panned the investigations into his conduct as a "political witch hunt".
Greitens faced the invasion of privacy charge stemming from a photo he allegedly took of a woman with whom he had an affair, when she was bound and blindfolded. Prosecutors say they hope to refile the case. The allegations led to a special investigation by the Missouri Legislature, which found the woman's testimony to be "disturbing".
The House leaders say the dropped case now means Greitens can testify before the House committee, which he so far has not done.
"This was a great victory and a long time coming".
In a statement from Gardner's office, Gardners said she was not anxious about the accusations and said the governor's legal team "threatened my staff and me with the continued barrage of insults and accusations if we continued to pursue charges against the Governor". Greitens' attorneys have accused a private attorney hired by Gardner of committing perjury.
"Above all, I am sorry for the pain that this process and my actions have caused my family, my friends, and the people of Missouri", Greitens continued.
Prosecutors said they will make a decision later on whether to seek a special prosecutor or appoint someone to continue pursuing the case.
Prosecutors accused Mr. Greitens of using the donor list of a veterans' charity he founded for political fund-raising, a charge that could lead to a four-year prison sentence if he is convicted.
Attorneys representing the state of Missouri announced Monday they will drop a felony invasion of privacy charge against Gov. Eric Greitens, after the attorney prosecuting the case was named as a witness in the trial. "As you observed in the proceedings, (Gardner) was never the active participant in the trial anyhow", Martin said.
According to a defense motion seeking to dismiss the charge, a special master reviewing images from Greitens' cellphone wasn't able to find any images associated with the mistress. The defense attorneys allege that William Tisaby, an investigator hired by Circuit Attorney Kim Gardner, lied to the court and withheld evidence.
Sullivan cited the fact that Greitens' defense attorneys planned to call the St. Louis circuit attorney, whose handling of the case has been under constant criticism by Greitens attorneys.
This is not the first time the defense has accused Gardener and Tisaby of misconduct.
Jury selection has been moving slowly and methodically in the criminal trial of Missouri Gov. Eric Greitens.
Prosecutors alleged Greitens took a revealing photo of a woman with whom he has acknowledged having an affair. Dan Brown, a Republican who was one of just four senators not to sign a petition calling for the special session on disciplining the governor.
An attorney for Gov. Eric Greitens' campaign has turned over more than 14,000 documents to a House investigatory committee but is objecting to a subpoena issued to a separate secretive group that has supported Greitens' agenda.
A dropped charge leaves him "better off because he can claim some victory", Robertson said. A House committee investigating allegations against the governor is expected to release a report laying out its recommendations next month.
In defending the hiring of Tisaby in March, Gardner's office claimed it sought help from police, the Federal Bureau of Investigation and the U.S. Attorney's Office, but received no cooperation, the Post-Dispatch reported.
Greitens has said he is innocent of any criminal wrongdoing and called the relationship in question consensual. "Only two of them were related to the invasion of privacy".
Attorneys for Missouri Gov. Eric Greitens say the felony invasion-of-privacy case against him was crumbling under a lack of evidence and they doubt any charge will be refiled.
"22nd Circuit Judge Rex Burlison made an unpreceded decision by granting a request by Governor Greitens' defense team to endorse the Circuit Attorney as a witness for the defense", the statement said.