iStock/Thinkstock(CHICAGO) -- A gunman killed himself Thursday after shooting his boss in the Bank of America building in Chicago's financial district, authorities said.
The victim was Steven LaVoie, the CEO of ArrowStream, which the suspect also worked for, the company said.
The suspect, identified as Tony DeFrances, had been demoted last Friday, police said. The company website listed DeFrances as Chief Technology Officer.
The suspect allegedly shot LaVoie before turning the gun on himself, police said.
"We are deeply saddened and shocked by the events that have occurred today," ArrowStream said in a statement released Thursday...