Suspected serial killer Jeffery Lee Guillory spoke “freely and voluntarily’’ to Baton Rouge police in 2006 and 2009, a judge said Tuesday in giving prosecutors permission to use those statements at Guillory’s second-degree murder trial set to begin Monday.

The Sept. 26, 2006, statement was taken more than three years before Guillory’s arrest in the slayings of Florida Edwards, Sylvia Cobb and Renee Newman, all of Baton Rouge.

The Dec. 16, 2009, statement was given the day Guillory was arrested. That interrogation lasted five hours.

“The court is satisfied that the defendant’s rights were given properly,’’ state District Judge Tony Marabella said from the bench Tuesday in denying a defense motion to suppress Guillory’s 2009 statement.

The judge said the statement was “freely and voluntarily given.’’

Police have said Guillory twice denied knowing or seeing Newman and Edwards. His DNA was matched to evidence found at both women’s crime scenes, authorities said.

In granting a prosecution motion to introduce Guillory’s 2006 statement, Marabella likewise said the statement was voluntarily given.

Guillory, 45, is scheduled to stand trial Monday in the 2002 killing of Newman, 46. Her body was found April 11, 2002, behind the old Maison Blanche/Goudchaux’s building on Main Street.

Prosecutor Dana Cummings said Tuesday she also will introduce evidence at Guillory’s trial related to his arrest in the 1999 slaying of Edwards, 36, and his conviction last year in the 2007 attempted murder of a Lafayette woman. He is serving a 50-year sentence in the Lafayette case.

Edwards’ body was discovered Sept. 3, 1999, inside the old Dynasty Lounge on North Boulevard.

Guillory was indicted in May 2010 only in the killing of Newman.

Cummings and Guillory’s attorneys spent more time Tuesday behind closed doors with Marabella than they did later in the courtroom.

When they emerged from Marabella’s chambers, Kerry Cuccia — an attorney for convicted south Louisiana serial killer Sean Vincent Gillis — was with them.

Guillory’s attorneys contend Gillis associated with Newman.

Cuccia declined comment as he left the courtroom, as did Cummings and Guillory attorney Franz Borghardt afterward on the Gillis issue.

Guillory’s attorneys have subpoenaed Gillis to testify at Guillory’s trial. The attorneys also are seeking Gillis’ taped police interviews and interrogations.

The defense cannot call Gillis to the stand if all he intends to do is assert his Fifth Amendment protection against self-incrimination.

A detective testified last fall that Newman reportedly associated with Gillis.

Authorities have alleged that Guillory and Gillis targeted women who led high-risk lifestyles. Police have said Newman and Edwards led such lifestyles.

Guillory remains a suspect in several other unsolved killings of women in Baton Rouge that occurred in the late 1990s and early 2000s, authorities have said.