RUSSELL ? A man being held in connection with a double-murder in Mississippi has been detained with the help of “unlawful and inadmissible” statements, his lawyers said in recent court papers.

Mark Blehm, lawyer for Roger Gillett, has filed a writ of habeas corpus, which requires the government to justify Gillett’s detention. Blehm filed the paperwork Friday in Russell County District Court.

The request and supporting documents said statements from Gillett’s girlfriend, Lisa Chamberlin, were taken before she had a lawyer.

Gillett and Chamberlin, both of Russell County, each face two murder charges in Hattiesburg, Miss., for the deaths of Vernon Hulett and Linda Heintzelman. Authorities say the couple died at their home in Mississippi, but their bodies were found March 29 inside a freezer on a farm near Luray in northcentral Kansas.

Chamberlin is in custody in Mississippi. Gillett, who has been held in the Russell County Jail, has fought extradition to that state, where authorities want him to stand trial for murder.

The papers filed Friday note that both suspects had asked to speak to lawyers shortly after their arrests in March.

The first lawyer assigned to Chamberlin withdrew, and Mark Blehm, Gillett’s attorney, said before Kip Johnson, the next attorney assigned to her case, had met with her, investigators continued their questions.

Those conversations with Chamberlin are the only proof that investigators have that Gillett was in Mississippi, Blehm said.

Johnson’s first meeting with Chamberlin was April 6, eight days after her arrest. The next day, she appeared in Russell County District Court without Johnson, or any other attorney, and signed papers agreeing to return to Mississippi.

Gillett was in court that same day, but he didn’t waive his right to the formal extradition proceedings.

Blehm wrote that Chamberlin’s statements were “unlawful and inadmissible,” and as a result Gillett’s extradition warrant, signed by the governors in Kansas and Mississippi, was defective “in that it can not be shown that Roger Gillett was even in the state of Mississippi at the time of the alleged offenses.”