Former GM CEO Rick Wagoner will be deposed in September as part of a lawsuit against the automaker.

The net cast by lawyers directing the class-action lawsuits against General Motors related to the faulty ignition switches just got a little wider as they announced former CEO Rick Wagoner will be deposed in September.

Wagoner, who was CEO when the company headed into bankruptcy in 2009, won’t be the only former chief sitting down to testify, if Bob Hilliard, the Texas attorney who is leading one of the class-action personal injury and death lawsuits against GM.

He also wants to depose Wagoner’s successors: Fritz Henderson, Ed Whitacre and Dan Akerson. They were on the job when the U.S. government owned a significant share of the automaker. Hilliard said he wants to get “every CEO who was there during the active cover up,” according to the Detroit News.

In essence, the suits contend that GM actively engaged in a cover up of the problem that led to the recall of 2.6 million small cars in 2014 and the deaths of 109 people and injuries to hundreds more.

The query will not stop with the former CEOs, according to Hilliard, who plans to interview at least 55 current or former GM executives. The automaker’s former top lawyer, Michael Millikin, will be questioned on Aug. 26.

“We’re in the discovery and deposition phase, so this is all part of the normal process (of litigation) that goes to trial in early January,” GM said in a statement.

(GM adds more to ignition switch death toll. For more, Click Here.)

Anton Valukas, who oversaw GM’s internal investigation and produced the well-known Valukas Report, will be questioned Sept. 24. The report, which came after he and his team interviewed hundreds of employees and review more than 40 million documents, put the company in an unflattering light where communication was poor, bad news was buried and cost trumped other factors in vehicle development.

(Click Here for details about GM’s latest plant investment.)

GM officials have consistently denied there was a cover up and current CEO Mary Barra has repeatedly stated that changing the culture documented in Valukas Report was a top priority for her as CEO.

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The company established a $550 million victims compensation fund to help the people and the families impacted by those vehicles. The design of the ignition switch allowed the key to move from the “on” position to the “accessory” position, cutting the power to the vehicle making the vehicle difficult to control and shutting down the airbags in some cases.