The Marylebone Cricket Club (MCC) has taken strict action after altercations between its members and Australian players at Lord's on day five of the second Test on Sunday.
Three members were suspended after clashes with Usman Khawaja and David Warner in the Long Room as Australia heading to the dressing room for lunch.
The incident came after England's Jonny Bairstow was stumped in a controversial manner by Australia wicketkeeper Alex Carey.
The MCC also released a statement where it apologised "unreservedly" to the Australian cricket team.
"They will not be permitted back to Lord's whilst the investigation takes place," it added.
"We maintain that the behaviour of a small number of members was completely unacceptable and whilst there was no suggestion by [Australia captain] Pat Cummins in the post-match press conference that there was any physical altercation, it remains wholly unacceptable to behave in such a way, which goes against the values of the club.
"MCC condemns the behaviour witnessed and once again we re-iterate our apology to Cricket Australia."
Khawaja and Australia captain Pat Cummins were also disappointed with the behaviour of MCC members.
"Lord's is one of my favourite places to come," said Khawaja. "There's always respect shown at Lord's, particularly in the members' pavilion in the Long Room, but there wasn't today.
"Some of the stuff that was coming out of the members' mouths is really disappointing and I wasn't just going to stand by and cop it. So I just talked to a few of them.
"A few of them were throwing out some pretty big allegations and I just called them up on it and they kept going, and I was like, well, this is your membership here.
"It's pretty disrespectful, to be honest. I just expect a lot better from the members."
It must be noted that Australia had also asked the MCC to investigate the incident.
"MCC came and apologised for the behaviour of some of the members," said Cummins.
"I think some of them might lose their memberships over the way they behaved. Other than that one time, they were fantastic all week. Normally fantastic, really welcoming.
"They were just quite aggressive and abusive towards some of our players, which I know the MCC weren't too happy with."
Australia lead the five-match Ashes series 2-0 after winning the first two fixtures.