Four sections of a safety chain that allows tourists to climb Uluru have been cut in what one Mutitjulu community member believes is a political statement against access to the sacred site.

Uluru local and tour guide Vincent Forrester said he was shown pictures taken by other guides from yesterday morning showing the cut chain.

Near the missing section of chain, a sheet was found with the words Acknowledgement Day painted on it.

Yesterday was the 30th anniversary of the handover of the park to traditional owners, who do not approve of tourists climbing Uluru.

Indeed, traditional owners have officially asked visitors not to climb the sacred site, and there is a permanent sign at the site with this directive.

A message from the local Anangu people, urging tourists to reconsider plans to climb Uluru, in Central Australia. ( ABC News: Sally Brooks )

Parks Australia confirmed there had been an "incident" but did not elaborate.

Mr Forrester said he and traditional owners at Mutitjulu yesterday for the anniversary ceremony were aware of the alleged act.

He said he believed it was a statement on the contentious issue of climbing the rock.

He said any repairs to the safety chain would require approval by Uluru's Board of Management, who could decide against it, and potentially halt climbing.

A permanent sign used to close access to the climb on especially hot days is currently in place.