The Millennium Tower window can be a single defect or a more widespread problem & # 039;

A homeowner found this crack in a window of his house on the 36th floor at the corner of the 58-story Millenium Tower in San Francisco

A crack found in a notorious skyscraper in San Francisco last week could signal major problems, according to a new report.

The inspectors issued a violation of the management of the Millennium Tower that collapses after a large crack formed in a window of the 36th floor.

The high-rise condominium building – dubbed by locals as the Inclined Tower of San Francisco – is the tallest residential building in the city. It has sunk 16 inches into its foundation since it was completed in 2009.

And according to a report, filed Friday with the City's Building Inspection Department, there may or may not be cause for concern.

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A homeowner found this crack in a window of his house on the 36th floor at the corner of the 58-story Millenium Tower in San Francisco

A homeowner found this crack in a window of his house on the 36th floor at the corner of the 58-story Millenium Tower in San Francisco

In the photo you can see the area where the glass cracked

In the photo you can see the area where the glass cracked

"The fact that this piece of glass may have failed due to the tilt of the building may be a localized or potentially more widespread defect," reads the report, presented Friday with the City's Building Inspection Department. In the photo you can see the area where the glass cracked

"The fact that this piece of glass may have failed due to the tilt of the building may be a localized or potentially more widespread defect," said the report, obtained by SF Gate.

"More research from outside the building is needed to understand and assess the problem."

According to the report, Allana Buick & Bers engineers will examine the building next week, photograph the crack from outside and stick the glass as a safety precaution.

Residents heard creaks and a loud bang at 2:30 am on Saturday before the crack appeared in the building (pictured)

Residents heard creaks and a loud bang at 2:30 am on Saturday before the crack appeared in the building (pictured)

Residents heard creaks and a loud bang at 2:30 am on Saturday before the crack appeared in the building (pictured)

The company is still trying to determine what caused the crack.

Last week, the residents heard crunching noises, and then heard an explosion around 2.30am on Saturday morning.

Later, an owner found the crack in a window of his house on the 36th floor at the corner of the 58-story building.

City officials have blocked part of the sidewalk of Mission Street as a precaution and ordered the administration to report on the extent of the problem and the strength of the building's facade.

San Francisco City Supervisor Aaron Peskin told NBC: "When you have a window on the 36th floor that breaks in the middle of the night, it's a big wake-up call."

He also added that the broken window was supposed to withstand hurricane force winds.

"If a window were to fail completely, it would rain glass fragments hundreds of meters below one of the busiest and most congested parts of the city," Peskin told the San Francisco Chronicle.

The center tower has settled about 16 inches in the landfill and is tilting.

Residents have filed multiple lawsuits against developers and the city since structural problems began after the completion of construction in 2009.

An October 2016 photo shows the tension meters placed along a wall with cracks from floor to ceiling in the parking lot of the Millennium Tower

An October 2016 photo shows the tension meters placed along a wall with cracks from floor to ceiling in the parking lot of the Millennium Tower

An October 2016 photo shows the tension meters placed along a wall with cracks from floor to ceiling in the parking lot of the Millennium Tower

The owner of Millennium Towers and president of the Association of Home Owners, Steven Mayer, told Fox2 KTVU: "We immediately reviewed the unit personally and agreed that our experts enter.

"What our preliminary structural engineer has to say, like our administrator or window expert, is that this is a unique issue at this time.

Mayer said officials expect to have more definitive answers & # 39; soon.

In January, building inspectors in the city of San Francisco issued a citation against the leaning tower for an apparent risk of fire safety.

KNTV of San José reported that the Building Inspection Department issued the violation notice against the Millennium Tower after the consultants discovered that the sloping building had spaces between the façade, the concrete and the steel core.

Experts said that smoke and flames can shoot through those gaps, making it easier for a fire to jump to a higher floor.

The fire safety hazard warning was part of a December 2016 report commissioned by the Millennium Home Owners Association after the owner of a condo complained of a mysterious odor.

Lawyers from the Millennium Homeowners Association (HOA) said in July 2017 that the foundation of the building should be rebuilt as soon as possible after it was discovered that the tower had sunk.

The luxurious building where the penthouses have sold for more than 13 million dollars, has an extensive indoor pool, a gym and spa, a home theater and a restaurant and wine bar run by the famous chef Michael Mina.

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