"@Pink I'm ready with my Bomb. Time to blow up #RodLaverArena. Bitch," the unidentified 16-year-old wrote on Twitter Sunday.
E! News said the boy was ejected from the concert venue before the show began and cited for public nuisance before later being released by police, the report said.
The boy subsequently said he was merely quoting the lyrics from P!nk's own album "The Truth About Love" when her concert was delayed an hour.
"It was meant to be about 'Drop the effects, the music, everything -- just drop it all,'" the boy told the Seven Network.
A spokeswoman for the Rod Laver Arena told the Sydney Morning Herald their security guards' top priority is ensuring public safety.
"We can't risk not taking matters like this seriously," she said. "Our security staff acted to ensure the area was secure and handed the matter over to the police."