Moments after being convicted for arson of his Phoenix, Arizona, mansion, an ex-Wall Street trader collapsed and later died. Looking back at the video clip, authorities are now wondering if that was actually a case of courtroom suicide:

About 5 minutes later, he placed that drink bottle on the table. Once again buried his face in his hands, and for a second time appeared to place something else into his mouth.

A closer look shows he swallowed several times.

At 12:52, Marin took a final drink. A few seconds later, he turned to talk to the people sitting behind him.

A woman handed him tissue, and it's a downward spiral from there.

He began to convulse at first lightly. But quickly it grows more violent.

Phoenix's Fox 10 News has the clip: Link