article_snippet: During a press conference, Mayor Bill de Blasio said there is a possibility that a gas line in the basement was 'inappropriately accessed internally by people in the building .
article_snippet: During a press conference, Mayor Bill de Blasio Mayor Bill de Blasio said there is a possibility that a gas line in the basement was 'inappropriately accessed internally by people in the building,' NBC reports.
article_snippet: Authorities are investigating whether the blast was the result of a gas theft scheme, according to NBC.
article_snippet: Though no one was charged with any wrongdoing at the time -- as it was being treated as a safety violation by inspectors -- investigators are trying to determine if a similar gas-theft scheme will take place.