Maricopa County Sheriff's investigators looking into the apparent courtroom suicide of Michael Marin, say they found cyanide in the back of his vehicle.
According to Fox News, Sheriff Joe Arpaio said they believe Marin made the cyanide powder into capsules and appeared to swallow something in the courtroom following his conviction on arson charges.
Minutes later, he collapsed and was pronounced dead at the hospital.
The sheriff's office is still waiting for the final toxicology tests, but deputies say they believe Marin took cyanide, and that a California company he bought it from is cooperating.
Prosecutors said Marin torched his home when he couldn't keep up with the payments. Marin, an attorney and father of four, faced seven to 21 years in prison.
Marin, a former Wall Street trader, had climbed Everest and wrote on his Facebook page that he had scaled six of the world's seven tallest mountains.
He also was an art collector who had original Picassos.
Prosecutors painted him as a desperate man who had $50 in his bank account in July 2009, down from $900,000 a year earlier.
He also had a monthly mortgage payment on the mansion of $17,250 and an upcoming balloon payment of $2.3 million.
Marin also owed $2,500 a month on a different home and owed $34,000 in taxes, prosecutors said.