NTSB: No proof yet of gas leak complaints before deadly blast in San Francisco suburb
{{#rendered}} {{/rendered}}Federal investigators are asking for the public's help to determine whether a gas line in a San Francisco suburb was leaking before a deadly fireball destroyed nearly 50 homes.
Christopher Hart of the National Transportation Safety Board says investigators have not yet seen any record of gas leak complaints before Thursday's explosion in a San Bruno neighborhood.
Some residents have said they smelled gas in the days leading up to the blast.
{{#rendered}} {{/rendered}}Officials are asking those people — especially anyone who called Pacific Gas and Electric about the problem — to tell officials.
Hart also says investigators want to talk to residents who noticed dead vegetation around the rupture spot, which can be a sign of a leak.
Four people have been confirmed dead in Thursday's blast, and four remain missing.
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Burke reported from Fresno, Calif.
THIS IS A BREAKING NEWS UPDATE. Check back soon for further information. AP's earlier story is below.
{{#rendered}} {{/rendered}}SAN BRUNO, Calif. (AP) — Federal investigators are asking for the public's help in determining how a gas line in a San Francisco suburb was able to rupture into a deadly fireball.
The National Transportation Safety Board's Christopher Hart says investigators have not yet seen any record of gas leak complaints before last week's explosion in a San Bruno neighborhood.
Some residents have said they smelled gas in the days leading up to the blast.
{{#rendered}} {{/rendered}}Officials are asking those people — especially anyone who called Pacific Gas and Electric about the problem — to tell officials.
Hart also says investigators want to talk to residents who noticed dead vegetation around the rupture spot, which can be a sign of a leak.
Four people have been confirmed dead in Thursday's blast, and four remain missing.