[areafiftyone]

They are saying natural gas seeping right now which they think could have caused it or sewer system.

[John W]

Of course,any natural gas lines to the building might have been impacted by the explosion.

[Cold Heat]

Possible, But the smell of gas prior to the explosion is usually reported. To smell gas afterwards is likely because of broken lines.

To get just the right mixture to explode is a freak event. The explosion is low velocity and does alot of damage but does not usually throw stuff 100 yards away. This looks fishy to me and I am usually not so suspicious.

[Map Kernow]

They are saying natural gas seeping right now which they think could have caused it or sewer system.

Remember there's oil and natural gas naturally occurring in the LA Basin area. About ten years ago the sidewalk outside a Ross clothing store in the La Brea area around the Mid-Wilshire neighborhood in Los Angeles ignited because of gas seeping up naturally. Might naturally occurring natural gas provide an explanation for this explosion?