Sue and Willie Coleman are searching for answers following the death of their son, actor Gary Coleman.

"We're not pointing fingers at anyone, but we need to know exactly what happened," Sue, 67, told PEOPLE. "We're not angry. We're just concerned. Did our son fall down the stairs? Did he fall in the bathtub? We need to have some closure on our son's life."

The Colemans, who reportedly found out about their son's death through the media, were unable to contact Gary's wife, 24-year-old Shannon Price, in the immediate aftermath.

"It's frustrating that we haven't heard from the Price family. But it's possible they didn't even know we existed. Gary may have told her that he didn't have any family," Sue said.