over the blasting music , limo driver orville brown heard someone in the backseat knock on the partition behind him , saying something about smoke .
 
driver orville " ricky " brown thought arrellano was asking if she could smoke a cigarette in the limo .
california highway patrol investigate the scene of a limousine fire that killed five passengers on the westbound side of the san mateo - hayward bridge in foster city , calif. , monday , may 4 , 2013 .
in an interview monday with abc7 news , arrellano , 36 , sat on the living room couch of her home first came the tapping .
michael keefe , fire chief of the foster city fire department , john mapes , foster city fire department investigator and robert foucrault , san mateo coroner , attend a press conference to discuss last saturday 's deadly limousine fire at the chp headquarters in redwood city , calif. on monday , may 6 , 2013 .
 
 
investigators are trying to determine ... ( associated press ) san mateo county firefighters and california highway patrol personnel investigate the scene