The celebrations in the park were marred by the July 27 bombing which killed two people ( one from a heart attack ) and injured 111 others . Security at the park and at all sporting venues was subsequently raised to include bag searches and metal detectors at all entrances . The bombing site is adjacent to the Park 's " Centennial Tree " . It was closed shortly after the Olympics for renovations ( including installation of grass ) until spring 1998
July 27 bombing
Centennial Olympic Park bombing
Centennial Olympic Park