Madison County, Illinois - A lawsuit against Amazon was filed Monday by the family of a delivery driver who was killed in December after a tornado hit an Amazon warehouse downstate, according to the family’s attorneys.

Six people who had been working at an Amazon warehouse in Edwardsville died following the December 10 storm, which left dozens dead across multiple states.

Among them was independent contractor Austin McEwen (26), who, like other workers, was allegedly required to work under conditions management knew to be unsafe, according to a news release from the law firm retained by the family.

The facility had inadequate emergency plans and no basement shelter, the lawsuit contends, and McEwen and others who died were told to shelter in a bathroom during the storm.

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The suit was e-filed Monday morning in Madison Circuit Court, though the courthouse was closed for the Martin Luther King Jr. holiday, an attorney for the family said.

A spokesperson for Amazon disputed those claims in a statement, saying members of a local team "worked to move people to safety as quickly as possible."

The lawsuit was expected to be the first filed against Amazon in connection with the deaths, according to Clifford Law Offices, the Chicago-based firm representing McEwen’s family.

"It appears that holiday profits took precedence over safety," said the family’s attorney, Jack Casciato, according to the news release.

In a statement, Kelly Nantel, a spokeswoman for Amazon, said the lawsuit "misunderstands key facts." The building was new and up to code, Nantel said, and "local teams" were following weather conditions at the time of the storm.

"Severe weather watches are common in this part of the country and, while precautions are taken, are not cause for most businesses to close down," Nantel said. "We believe our team did the right thing as soon as a warning was issued, and they worked to move people to safety as quickly as possible."

Amazon representatives previously have said its emergency response, including in the event of severe weather, is part of training for warehouse employees. They insisted employees are instructed to shelter during tornadoes, but the company declined to specifically state when workers at the Edwardsville facility were warned about the threat.

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Amazon recently opened warehouses across the south suburbs, in Markham, Matteson, and University Park.

According to law enforcement officials in December, the other victims at the Amazon warehouse were Deandre Morrow (28), Etheria Hebb (34), Kevin Dickey (62), Clayton Lynn Cope (29), and Larry Virden (46).

The federal Occupational Safety and Health Administration last month opened an investigation into the facility’s collapse, and has six months to complete it, OSHA officials said at the time.