A man suing 7 airlines plans to accuse them of a 'conspiracy to interfere with civil rights' - and says more people are joining his lawsuit

A frequent flier suing seven US airlines said he plans to file an amended complaint on Monday, which will add multiple plaintiffs to his lawsuit over the airlines' mask requirements.

Lucas Wall, of Washington DC, said via email on Friday that he planned to add new charges against the airlines, including "conspiracy to interfere with civil rights." 

Wall had previously told Insider: "It will be a stronger case with multiple plaintiffs showing the wide-ranging discrimination in the airline industry."

The lawsuit was filed June in US District Court in Orlando against Southwest, Alaska, Allegiant, Delta, Frontier, JetBlue, and Spirit. Wall, who is representing himself, also has an ongoing lawsuit against the Biden administration.