(CNN) The implosion of two cranes at the Hard Rock Hotel in New Orleans, which partially collapsed during construction, has been delayed yet again -- at least until Sunday, officials said.

Saturday evening's Krewe of Boo event downtown, the city's official Halloween parade, had been canceled because of the expected demotion, but now it's back on.

"After consulting with the explosive experts, we have a shift in our timeline," New Orleans Fire Chief Tim McConnell told reporters Saturday, adding that the soonest the demolition could take place is about noon Sunday.

"They're working to get it done," he said of the engineers. "We've told you this is a very dangerous building. The cranes are still in a precarious situation."

Crews had hoped to bring the cranes down Friday evening but that was delayed because of a tropical storm , officials said.

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