A woman remains hospitalized with serious injuries Monday in the wake of an accident last week involving a double-decker tour bus that ran into a low-hanging wire in the Richmond District.
Four people were sent to the hospital Friday after a sight-seeing tour in San Francisco took a devastating turn.
Thousands of people board the open-air, double-decker buses for daily sight-seeing tours to get look at San Francisco from up on high.
Big Bus Tours is under investigation after a double decker bus took a dangerous detour on 12th Avenue in the Richmond District Friday afternoon, striking a wire and injuring five passengers.
The accident happened at 3:17 p.m. outside of Mark Wescott's home. Tangled and snapped cables were still on the ground at the scene.
He told KTVU he tried to warn the bus company after another big bus struck and loosened the wire 90 minutes before the accident.
"I sent an email and said 'Hey, one of your buses just clipped a wire. It's probably a safety hazard,'" said Wescott.
Police said the passengers on the rear of the deck expressed concerns about the wire moments before impact.
Sources tell KTVU a 67-year-old woman nearly had her nose torn off. She was transported to San Francisco General Hospital in life threatening condition.
Police said she has since improved and the other passengers are expected to recover.
The driver stopped outside a fire station down the block to summon help.
"The double decker buses that exceed certain heights are restricted to certain routes that are safe to operate in and this happened to be the exception," said San Francisco Police Department spokeswoman Officer Tracy Turner.
General Manager for Big Bus Andrew Smith said the driver was drug tested and explained the route -- heavily lined with wires -- is often used to avoid heavy traffic on Park Presidio.
"It was a divert route that we have in place. It is double checked on a regular basis," said Smith.
PG&E and Xfinity sent crews Monday afternoon to check out the torn cables. Both say the lines were not theirs.
The California Public Utilities Commission -- which regulates the buses and some of these utility cables -- was unaware of the accident until KTVU informed them Monday.
Watchdogs are questioning an exclusive agreement between the City of Oakland and a non-profit group, tapped to lead a multi-million dollar project to redevelop the area around the Coliseum BART station.