The show's milestone episode was marked with an unknown assailant pushing Ramsay Street legend Paul Robinson (Stefan Dennis) over the mezzanine balcony at the Lassiter's complex, leaving him in a coma.
Novakovic told Holy Soap: "We didn't know who it was until a couple of weeks after the 6,000th episode. I don't think even the person who did it knew.
"It was a massive thing for us. I really wanted to know who it was but it's kind of better if you don't. When I was reading the scripts, I was trying to figure out who it was. It made it more exciting."
Commenting on the characters currently in the frame for Paul's attempted murder, Novakovic said: "Personally I didn't think it was Andrew [Robinson, played by Jordan Smith] because that's how I had to play it.
"But then something happens and you think, 'Maybe it was'. There are so many ups and downs. It's all very exciting."