ASSOCIATED PRESS — PHILADELPHIA A gunman fatally shot three people [NOT pictured] at a business meeting before turning the gun on himself Monday night in an office building at the old Philadelphia Navy Yard, police said. The gunman appeared to get upset at a board of directors meeting for a company that might have been an investment firm, Deputy Commissioner Richard Ross said. The gunman also died, police Capt. Benjamin Naish said. Another person was critically injured. Another two people were present but not shot, police said. The shooting took place in a conference room in a business at the Philadelphia Naval Business Center, police said. Ross described the scene inside the conference room as “utter chaos.” “This is a tragic situation,” Ross said, “one you never hope will hit Philadelphia.” DEVELOPING