i am kate merrill jim smith has been following this story and us live tonight in franklin. >> reporter: hate and kate, it has been a very long day and a long night at this condominium development in the town of franklin. take a look behind me. this was obviously, a terrible fire. you can see what is left of this condominium units. it was basically consumes by this fire. >> for the big room -- we heard a big boom about 10 minutes till four. >>> a condominium totally engulfed. a huge fire and in -- and explosion. a huge fire likely fed by propane. >> we looked out back and the building was completely engulfed. it was really quick. >> one brand-new unit was destroyed and the huntsman -- and a husband-and-wife living there were both killed. they walked every morning. just nice and mine grandpa. >> how sad is this. >> terribly sad? >> the two other units were the body's worth found close together. we are saddened by the tragedy. the cause of the explosion and fire still under investigation. the chief says there is no indication of a widespread problem that some people are an easy about the

jim armstrong. >> i'm kate merrill. the woman inside did escape in time. investigators are searching for the cause of that explosion. jim smith is live in taunton tonight with the story. reporter: this is being investigated as a possible gas explosion but the issue is the cause. what exactly went wrong. let me slow you the wreckage here. this is absolutely incredible. there's basically nothing left of this house yet the woman who lived here somehow escaped with her life. >> reports of the ground shaking explosion and on fire. reporter: a house destroyed and totally engulfed in flames. it was late afternoon when suddenly there was a huge explosion. neighbor paul saltalamacchia took this incredible video around the same time he saw a woman living inside the house scramble to safety. >> came running out saw the owner who had just run out of the house frantic come room down the street screaming for help. i recognized her. we called 911 and assisted her. the house went up in flames and really a matter of 3 minutes, and then within 40 minutes the roof caved in it was really amazing. reporter: amazing is a good for it. much of the h