Four Pennsylvania law firms are among a group of businesses facing a new lawsuit over a failed Harrisburg incinerator project that racked up $360 million in debt, causing the city to go into receivership.

Buchanan Ingersoll & Rooney, Eckert Seamans Cherin & Mellott, Obermayer Rebmann Maxwell & Hippel and Foreman & Caraciolo (formerly Foreman & Foreman) were all named defendants in the suit, in which the plaintiffs called the incinerator project “the worst municipal financial disaster in the history of the commonwealth of Pennsylvania.”