There's new details emerging about what may have caused a major accident involving two trucks with the Houston Fire Department. Three of the 11 people hurt remain in the hospital.

A Houston Police spokesperson says the preliminary focus is that the driver of a ladder truck "may" have run a red light. Both the ladder truck and a pumper trucks were on their way to what turned out to be a false alarm at a nearby apartment complex.

On the way to prove if the light was red could come from a surveillance camera at a nearby convenience store. The hard-drive has been turned over to investigators, but technical issues may prevent the video from being recovered.

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Two of the nine firefighters hurt remain in the hospital Capt. Mike Mayfield and Brian Edwards are dealing with broken bones and surgery. They were both on the pumper truck.

"When they came out of anesthesia they asked about that girl even though they were seriously injured," says Capt. Jeff Powell, who visited the men on Tuesday.

That girl they were referring to is Leigh Boone. The 29-year-old was seriously hurt and in critical condition. She was riding her bike to work at a nearby clothing store when the ladder truck fell right next to her.

A woman driving a car that was pinned by the ladder truck is home recovering. Jotika Ramchandani has hired a lawyer

"How is she doing, she is in shock right now," says attorney Terry Bryant.