SPARKS, Nev. (AP) — Police stormed a Nevada apartment after a standoff and found a Nevada couple who appeared as ghost hunters in the reality television show "Ghost Adventures." 
 
 Mark and Debby Constantino were found dead Tuesday in a barricaded Sparks apartment. Officials weren't releasing a cause of death. 
 
 The couple was 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. 
 
 A SWAT team responding to a hostage situation found their bodies when officers stormed their adult daughter's apartment near Sparks High School following an hours-long standoff on Tuesday. 
 
 Mark Constantino shot at officers who approached the door of the Sparks apartment, but they did not return fire, police said. 
 
 "The subjects involved in this incident were not shot at or injured by gunfire from any law enforcement personnel," Sparks police Lt. Rocky Triplett said in an email Wednesday to The Associated Press. 
 
 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. 
 
 KTVN-TV in Reno, which videotaped them during a ghost adventure in 2007, first reported late Tuesday they were paranormal investigators. 
 
 Tuesday's incidents began at 6:30 a.m. when Reno police received a call of a man found dead at a home in northwest Reno where Debby Constantino had been living. She was missing. 
 
 Police say Mark Constantino was a suspect in that death. 
 
 Without naming her at the time, Reno police Lt. William Rulla told the Reno Gazette-Journal she had been a victim in an earlier kidnapping and domestic incident involving Mark Constantino, and that officers tracking her cellphone located her inside the Sparks apartment with her estranged husband. 
 
 Officers heard several shots fired when they knocked on the apartment door and heard a man yelling at police to leave. The suspect 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. 
 
 One officer was taken to a hospital after he was hurt by broken glass when police used explosives to open the door. 
 
 The Constantinos lectured at paranormal conferences around the country and maintained a Web site, www.spirit-speak.com. ||||| List of celebrities charged with domestic abuse, loosely ranked by fame and popularity. Emmy award winners, Oscar winners, and World Series MVPs have all been arrested for domestic violence. Many of the cases are dealing with repeat offenders, but sometimes it was a one-time incident in which the charges of domestic abuse were later dropped. 
 
 Who is the most famous person charged with domestic abuse? Charlie Sheen tops our list. The Two and a Half Men star plead guilty to domestic abuse charges in 1996 and 2009. Sheen has a history of drug abuse, although the only drug he claims to use these days is a drug called “Charlie Sheen.” He is currently starring in the TV show Anger Management and hasn't been in trouble with the law since 2009. Other famous actors who have been charged with domestic abuse include Mel Gibson, Josh Brolin, Mickey Rourke, Steven Seagal, James Brown, Madonna, and Sean Penn. 
 
 Some famous ladies have also been charged with domestic abuse. In 1998, Carmen Electra and then-husband Dennis Rodman were involved in a domestic incident in which they were both taken to prison. More recently, Emma Roberts was charged with domestic abuse and assault when she allegedly bloodied the face of her boyfriend, actor Evan Peters. Roberts's father, Eric Roberts, also has a history of domestic violence. 
 
 Do you think that drugs and alcohol are factors in so many celebrities being charged with domestic violence? Share your thoughts in the comments section and tell us how you feel about celebrity wife beaters and if their relationships are worth saving despite abusive partners. ||||| The couple were found inside their daughter’s apartment at 1100 15th Street, near Sparks High School. 
 
 SWAT teams from both Reno and Sparks police surrounded the Courtside Gardens Apartment, evacuated the complex and put it on lockdown. 
 
 The incident started at 6:30 a.m. when Reno police received a call of a man found dead at a home in the 2300 block of Escalera Court in northwest Reno. 
 
 A woman arrived at the residence to find her roommate dead inside, Reno Police Lt. William Rulla said. As they were investigating, they learned that another roommate, Debbie Constantino, was missing. 
 
 Officers tracked her cellphone and found her inside the apartment in Sparks with her estranged husband. 
 
 Rulla said she was previously a victim in a kidnapping and domestic incident with her husband. 
 
 Upon arriving at the apartment, officers knocked on the door and heard several shots fired, said Deputy Chief Tom Robinson, of the Reno Police Department, in an earlier interview. 
 
 The suspect told police "give me 15 minutes to gather my thoughts or I'll kill her," Robinson said. 
 
 Officers said they heard a man yelling at police to leave. Police began negotiating with the suspect, but officers eventually used explosives to blow the door open and found the couple dead inside. 
 
 Police did not say how they were killed or what kind of gun was used. 
 
 Sparks High School was put on lockdown as a precaution, but eventually released at the normal 2:35 p.m. time. 
 
 Police weren't searching for other suspects, but haven’t ruled out anything, Rulla said. 
 
 The name of the male roommate found in the northwest Reno home was not immediately released. 
 
 Anjeanette Damon contributed to this story. 
 
 Check with RGJ for more information as it becomes available. 
 
 Marcella Corona covers breaking news for the Reno Gazette-Journal. Contact her at 775-788-6340, mcorona@rgj.com or follow her on Twitter at @Marcella_Anahi or on Facebook at Facebook.com/Marcella.Anahi
– A pair of ghost hunters were found dead in a Nevada apartment yesterday following an hours-long standoff with SWAT teams in what is likely a domestic-violence incident, the AP reports. They were identified by police as paranormal investigators Mark and Debby Constantino, who had made numerous appearances on Travel Channel's Ghost Adventures, according to the Reno Gazette-Journal. The AP reports the couple had a history of domestic incidents, and Debby had taken a restraining order out against Mark last week. They were scheduled to appear in court in December over their pending divorce. Police received a call after Debby's male roommate was found dead in their home yesterday morning, the Gazette-Journal reports. Debby was missing, and police tracked her cellphone to the apartment of her and Mark's adult daughter. When officers knocked on the door, they heard shots fired and a man saying, "Give me 15 minutes to gather my thoughts or I'll kill her." After failed attempts to negotiate, police blew open the apartment door and found Mark and Debby dead inside. Police have so far not released a cause of death, according to the AP. Mark is suspected in the murder of Debby's unidentified roommate. (These 79 celebrities have been charged with domestic abuse.)