SYDNEY, Jumada I 27, 1437, Mar 7, 2016, SPA -- A man who police said fatally shot one person and wounded two others inside a western Sydney business was found dead inside the building after a six-hour standoff on Monday, AP reported. Heavily armed police moved into the sign-making business after spending hours positioned around the factory in an industrial area of Ingleburn, a suburb 40 kilometers (25 miles) southwest of Sydney. Once inside, they found a 33-year-old man dead of an apparent self-inflicted gunshot wound, said New South Wales police Detective Inspector Mark Brett. Police also found three other people hiding inside the building and escorted them outside, Brett said. Police do not know what prompted the shooting, Brett said. --SPA 11:21 LOCAL TIME 08:21 GMT www.spa.gov.sa/w