The Walmart truck driver charged in the deadly crash involving actor Tracy Morgan made his first appearance in court today. Kevin Roper pleaded not guilty to charges including death and assault by auto.

Prosecutors allege that he had been awake for more than 24 hours and didn’t notice the traffic ahead of him had slowed down on the New Jersey Turnpike. He swerved and crashed into Morgan’s limo bus, killing James “Jimmy Mack” McNair, and injuring three others, including Morgan.

A person claiming to be Roper has tweeted about the crash, blasting the media for falsely claiming he was sleep deprived.

Other tweets include:

Walmart says Roper isn’t on social media, but his lawyers haven’t confirmed or denied that. Furthermore, the corporation says he was driving within the hours permitted by federal guidelines.

Today on Shepard Smith Reporting, Judge Andrew Napolitano said the prosecution will have to prove that his behavior was so reckless and wanton that he didn’t know what he was doing.

Judge Napolitano said Walmart could face lawsuits if the plaintiffs can prove that Roper was driving for 24 hours without sleep.