today, the building's owner, her son and two c ctractors were arrested and charged with manslaughter. accused of tampering with gas lines in their rush to rent apartments for up to $6,000 a >> when greed guides the decisions and the respect for human life doesn't, this is the result. >> reporter: nearly one year later, the two people who died are still remembered here at the site. prosecutors say the contractors illegally jerry rigged the gas lines twice. first, with dangerous flexible hoses, shown in this photo, to supply gas to the apartments above. later, by allegedly tapping into the gas lines of the neighboring building, and hiding it all from inspectors. they say the day of the deadly fire, the owner's son and the lead contractor went to investigate the odor of gas in the basement. >> they smelled the gas and d en they sprinted out of the building, without alerting people in threstaurant. >> reporter: minutes later, the gas ignited. and prosecutors say the building, which had been here, had already failed one inspection, and the owners wanted to get those renters in as soon as p