Sparks police identified the couple found dead inside an apartment on Tuesday as Mark and Debby Constantino, local paranormal investigators featured in the Travel Channel hit series "Ghost Adventures."

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