On Wednesday morning, a family of five was found dead in their home in Phoenix, Arizona. While police are yet to determine their cause of death, they suspect this is a case of murder-suicide, reported ABC affiliate KNXV.

Sgt. Melissa Soliz of Phoenix police stated that the deceased include two adults and three children, and that their corpses had “obvious signs of trauma”.

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Regarding the police’s official stance on the incident being a murder-suicide, Soliz said, “That’s something that we’ll still need to look at,” further adding, “It’s not something we’re comfortable saying at this point.”

The names and ages of the five people weren’t immediately released. While a homicide investigation has already been launched, Soliz said, “We do not believe that there is a suspect on the loose right now”, but added that the investigation was in its nascent stages and that “This scene will most likely be processed by detectives for the majority of the day into the night”.

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A 911 call led to police, city firefighters and hazardous materials teams being dispatched to the home around 8 a.m. Wednesday about a possible gas leak. Authorities said the presence of gas was detected at the home.

Television station video from the scene showed a propane tank in a large taped-off area around the house and multiple emergency response vehicles in the neighborhood.

Police officers didn’t go inside the home for several hours over safety concerns, but reported finding the five bodies after the house was secured around noon.

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Southwest Gas, the local utility, cut gas supply into the home once the incident came to light. 

Southwest Gas has confirmed that there was no leak in their supply, stating, “All Southwest Gas infrastructure serving the community is operating without issue.”

The names of the deceased individuals have not been released yet.