PHOENIX (AP) -- An Arizona man collapsed in court and died after hearing a jury convict him of burning down his $3.5 million mansion.

A Maricopa County Superior Court jury on Thursday found Michael Marin, of Paradise Valley, guilty of arson of an occupied structure.

The Arizona Republic reports the 53-year-old collapsed shortly after the verdict was read. He was taken to a hospital, where he was pronounced dead.

When Marin's trial began in May, prosecutors said he could face nearly 16 years in prison if he was convicted.

Marin's suburban Phoenix mansion burned down in July 2009 after it failed to sell at a charity auction.

Fire investigators determined the fire was deliberate. Prosecutors claimed Marin set fire to his house because he could no longer pay the mortgage.