SPARKS, Nev. » The bodies of a man and woman found in a barricaded apartment by police investigating an earlier Reno homicide were an estranged husband and wife who appeared as ghost hunters in the television show "Ghost Adventures."

Reno police continued their investigation Wednesday but released few new details about the chain of events that led to Tuesday’s deaths of Mark and Debby Constantino in the Sparks apartment several hours after the killing of another man in Reno.

Officials weren’t saying how the three died but said Mark Constantino fired at officers who approached the apartment door.

The Constantinos were featured in recent years on the Travel Channel’s series, including episodes shot at the Mustang Ranch brothel east of Reno, the Goldfield Hotel and the Market Street Cinema in San Francisco.

The couple were found dead when a SWAT team responding to a hostage situation stormed their adult daughter’s apartment.

Sparks police Lt. Rocky Triplett said Wednesday that officers did not return fire when Mark Constantino shot at police.

"The subjects involved in this incident were not shot at or injured by gunfire from any law enforcement personnel," he said in an email to The Associated Press.

Reno police had responded to a call at 6:30 a.m. Tuesday about a man found dead at a home in northwest Reno where Debby Constantino and another woman had been living. Officers tracked her cellphone to the apartment across town in Sparks.

Police have said little about the Reno killing, but Triplett confirmed Wednesday that the two incidents were "directly related."

Officers heard several gunshots when they knocked on the apartment door and heard a man yelling at police to leave. The man told the officers, "Give me 15 minutes to gather my thoughts, or I’ll kill her," Reno Deputy Police Chief Tom Robinson told the newspaper.

Police used explosives to open the door. An officer was hurt by broken glass and taken to a hospital.

Washoe District Court records show Debby Constantino obtained a restraining order that was served on her estranged husband last week, and the two were scheduled to appear in court in December regarding their pending divorce.

Reno police Lt. William Rulla told the Reno Gazette-Journal that Debby Constantino also was the victim in an earlier kidnapping and domestic incident involving her estranged husband.