Boeing Whistleblower John Barnett Died By Suicide, Left A Note: Police

Police officers had found John Barnett dead on March 9 in the driver's seat of his truck with a gunshot wound to the head.

John Barnett, a whistleblower who had raised concerns about safety and production standards at Boeing, has died by suicide, the police said. 

The 62-year-old was found dead inside his truck on March 9, in South Carolina, US, reported CNN.

Initial investigations into his death were underway, but they have since been halted, the report added.

Mr Barnett was scheduled to testify against Boeing (an Aerospace company) in a legal case, alleging illegal retaliation by the company, the report mentioned.