Around 50 more fines have been issued by British police investigating possible lockdown-breaking parties in Downing Street and across Whitehall.
It brings the number of fines to more than 100, including Boris Johnson, his wife Carrie and Chancellor Rishi Sunak who were hit with fixed penalty notices in April over a birthday party held for the Prime Minister in the Cabinet Room in No 10 in June 2020.
It is understood that Mr Johnson has not received another fine, but the police investigation continues.
In a statement, the Metropolitan Police said: "As of Thursday May 12, Operation Hillman, the investigation into breaches of Covid-19 regulations in Whitehall and Downing Street, has made more than 100 referrals for fixed penalty notices (FPNs) to the ACRO Criminal Records Office.
"These referrals have continued to be made throughout the period since our last update on Tuesday April 12 and the investigation remains live."
In its last update on 12 April, the Met said "over 50" FPN referrals had been made.
Mr Johnson previously said it "did not occur" to him the gathering to mark his 56th birthday was a violation of coronavirus rules, but that he "now humbly accepts" he did breach Covid-19 laws.
Mr Johnson's official spokesman said: "With regards to the Cabinet Secretary and the Prime Minister, I don't have any update ... the position (is) we will update you if that were to change."
Pressed on whether it was his understanding that the PM and Mr Case were not in the latest tranche of people fined, the spokesman said: "That's correct, yeah."
He added: "You'll know that the Prime Minister has on a number of occasions apologised and made clear that there were things we simply did not get right, and that he is sorry for how this matter has been handled.
"Obviously that remains the case. And like I say, he will have more to say at the conclusion ... and when the Sue Gray report is published."