2 More arrested in deadly arson fire at Young Champions building

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PHOENIX -- Two more people are behind bars in connection with a deadly arson fire in southeast Phoenix.

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2 more arrested in deadly arson fire - Two more people are behind bars in connection with a deadly arson fire in southeast Phoenix.

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According to investigators, Jeffrey Otto and Moniza Murillo conspired to set a fire last month at an office building owned by Young Champions of America.

Another suspect, Joshua Robinson, died in the fire. A fourth, Jon Antonucci, was arrested at the scene near 40th Street and Roeser Road.

Investigators believe Antonucci, 19, was trying to destroy evidence of embezzlement. He had recently been fired from Young Champions of America amid allegations of embezzlement.

Investigators said they believe Antonucci was the lookout for Robinson, who actually started the fire by pouring fuel on the accounting books. Robinson used so much fuel that when he tried to light the books, it sparked a large explosion.