SAN DIEGO -- A third day of a closed-door pretrial hearing concluded Friday with no word on whether a jury will eventually hear about David Westerfield's statements to police or the pornography found on his computer.

Westerfield, 50, is charged with murder, kidnapping and misdemeanor possession of child pornography in the death of 7-year-old Danielle van Dam.

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His potential death penalty trial is set to begin next Friday with jury selection. Meantime, the closed pretrial motion hearing will resume Monday.

Friday's witnesses included Detective Mike Ott, one of two police officers who defense attorneys allege illegally interrogated Westerfield in the days after Feb. 2, when the victim's parents reported their daughter missing.

Ott and partner Mark Keyser also went to the San Diego County Jail and tried to talk to Westerfield the day after the second-grader's body was found Feb. 27 off a road in Dehesa.

Westerfield, who lived two doors down from the van Dams in Sabre Springs, was arrested Feb. 22 after three weeks of surveillance.

The divorced self-employed design engineer told detectives he took his motorhome to Imperial Beach, then the desert, the weekend Danielle was reported missing.

Detective Johnny Keene testified at a preliminary hearing that Westerfield had a number of small scratches on his left hand and arm when he was interviewed at his home the morning of Feb. 4.

DNA experts testified that Danielle van Dam's blood and fingerprints were found in the defendant's recreational vehicle, according to preliminary hearing testimony. The victim's hair was also found in the motor home, according to prosecutors.

They want Superior Court Judge William Mudd to allow them to show a jury the pornographic materials found in Westerfield's computer, to prove his motive was to sexually molest the victim after he allegedly took her from her bedroom in Sabre Springs the night of Feb. 1.

Westerfield's lawyers argue that the child pornography charge should be handled separately from the murder and kidnapping charges.

The judge also is expected to rule on a prosecution motion to limit the possible introduction of evidence into the alleged "swinging lifestyles" of Damon and Brenda van Dam.

Also in question is whether a number of reporters would have to testify about interviews or encounters they had with Westerfield in the days after the child disappeared.

Earlier this week, Deputy District Attorney Jeff Dusek told the judge that two missing teeth indicate Danielle van Dam suffocated when her abductor jammed something into her mouth.

Doctors were unable to determine the cause of death or if the girl was sexually assaulted because her body was so decomposed, Dusek said.

The judge also refused to make a firm decision on whether the jury in the upcoming trial will be sequestered, saying it "adds one more problem to finding a community jury to try this case."

Defense attorney Steven Feldman said he may ask later for a change of venue.

Mudd said he would reopen the courtroom at some point to inform reporters and the public of rulings made in closed session.