For months, prosecutors say, technicians at a North Carolina plant prepared life-sustaining syringes and shipped them before ensuring that they were sterile. Investigators say they think a rush to maximize profits led Dushyant Patel's AM2PAT Inc. to produce heparin and saline syringes that killed five people and sickened hundreds of others. Some cases resulted in spinal meningitis and permanent brain damage. Officials are now on an international search for the chief executive after he was indicted last week on 10 charges including fraud, false statements and selling adulterated medical devices.