South Sydney Rabbitohs star Latrell Mitchell and Melbourne Storm's Josh Addo-Carr apologised for breaking social-distancing rules.
The NRL duo were pictured breaking rules amid the coronavirus pandemic and police said on Monday they were investigating the matter.
Mitchell and Addo-Carr apologised later on Monday, with the incident a blow to the NRL as it plans to restart its season on May 28.
"Firstly, I just want to apologise on my actions this weekend," Mitchell said in a video posted on Instagram.
"I've been up here with my family for the last four to five weeks and practising the social distancing and stuff and it was a little bit of a slip-up, but 'Foxy' reached out, had his cousins that are going through a bit of stuff in Sydney so he just wanted to get away up to the bush and make sure that they're getting cultured and connected again and that's the whole part of the concept of [what] this weekend was.
"He wasn't here to break any rules or hurt anyone, we're not being selfish. Look, I couldn't turn down the brothers in a time of need so just wanted to let you know on behalf of me and 'Foxy' and all my mob, we do apologise."
In his own video, Addo-Carr said: "Firstly, I'd like to apologise for my actions this weekend.
"Nothing was intentional or deliberate, a couple of family members of mine were going through a really tough time at the moment and I got in contact with Latrell to go out to his private property and try and connect to our culture again and try and put a smile on their faces and have a bit of fun as well.
"I can't wait to go out there and finally play some footy and, like I said before, I'm really sorry from the bottom of my heart."