General Motors this week reportedly asked a Texas judge to throw out a lawsuit over a fatal 2011 crash blamed on a faulty ignition switch, accusing plaintiffs and their lawyers of fabricating evidence about the vehicle’s key during the ongoing trial.

According to a GM court filing cited by the Reuters news agency, plaintiffs Zachary Stevens and his parents, and their lawyers, showed jurors in Harris County court a key attached to a chain containing several other items, claiming it was the one used to drive the 2007 Saturn Sky involved in the crash.

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But GM responded the key displayed in the courtroom did not belong to that vehicle. The carmaker, which recalled 2.6m vehicles in 2014 for defective ignition switches, has warned that added weight to key chains can cause the switches to slip out of position.

Acoding to Reuters, Stevens said ignition-switch rotation caused him to lose control of the Sky, hitting another vehicle and killing that driver. His 2015 lawsuit was the first to go to trial among roughly 20 pending in Texas state court.

In its filing, GM said Stevens initially said he was driving with just a few items attached to his key. But the key chain shown to jurors comprised three rings holding additional items like a souvenir Eiffel Tower and gym membership card, according to the motion.

GM reportedly said plaintiffs “fabricated ‘evidence'” to support their theory that key rotation, not Stevens’ driving, caused the crash. A manslaughter charge initially brought against Stevens was dropped following GM’s recall announcement.

The company asked the judge to either dismiss the case altogether, or to inform jurors about the allegedly false statements with instructions to disregard them, Reuters reported.

The alleged misstatements “have hamstrung the search for the truth,” GM wrote.

Reuters noted that, earlier this year, a judge overseeing federal switch litigation dismissed the first of those cases to go to trial. The only switch case to reach a jury resulted in a verdict absolving GM of liability for a 2014 crash in New Orleans.

GM has paid roughly $2 billion in criminal and civil penalties and settlements in connection with the switch.

Another switch trial is set to begin September 12 in Manhattan federal court, Reuters added.

The Harris county court last week rejected another claim related to the ignition switch recall.

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