London Metropolitan Police said it responded to a call from a local resident, but that "all occupants of the address. were all safe and well".
The front runner to become the next British leader said he would ensure the United Kingdom left the European Union by the end of October.
"You just don't care for anything because you're spoilt".
Regardless of who eventually is voted in as the new prime minister, how the two remaining candidates use their remaining time before the final vote could change public opinion and ultimately impact the future of Brexit.
However, former attorney-general Dominic Grieve told BBC Radio 4's Today Show that character would be an important element for voters to consider.
When challenged that these do not exist yet, Mr Johnson replied: "Well, they do actually, you have in very large measure they do, you have trusted trader schemes, all sorts of schemes that you could put into place".
Hunt, who was campaigning in Scotland on Sunday, told Sky News that Johnson, a former foreign minister and former London mayor, "needs to show he's prepared to answer hard questions".
Rival candidate Jeremy Hunt said the ex-Cabinet minister should "answer questions on everything".
The two final contenders for leadership of Britain's ruling Conservative Party, Jeremy Hunt and Boris Johnson will be put to a vote of party members nationwide, with the victor due to replace Prime Minister Theresa May as party leader and prime minister.
But Johnson had lost the lead on Saturday, with 32% supporting Hunt and 29% Johnson.
According to the Survation poll in the Mail on Sunday, Hunt is now the preferred candidate to become prime minister among voters for all parties, after Johnson suffered a 7 percent decline in support.
Tom Penn said the allegations were "bizarre and fictitious", explaining in a statement to the paper that he dialled 999 after hearing shouting coming from his neighbour's flat.
Hunt says the public want a "fair and open contest, not one that one side is trying to rig to avoid scrutiny".
In terms of the controversies over his personal life, it is absolutely clear even now - when he is on the threshold of No 10 - that Boris Johnson thinks there are questions he simply does not have to answer.
However, a Sunday Telegraph-commissioned ComRes poll suggests that Mr Johnson has maintained his lead, at 22 points ahead among Tory Councillors.
'I think that actually might have ended the story'.
"He is going to come to power on a very fragile coalition of people like Matt Hancock, who wants no-deal taken off the table, Mark Francois, who wants no-deal", he told ITV's Good Morning Britain.
When Mr Johnson dodged and then said he would not discuss the matter, some Tory activists in the audience booed the host and shouted for him to move on.
"We looked at each other and I goes, "do you see that?' and he goes, "I see that as well".
He's been interviewed by the BBC's political editor Laura Kuenssberg.
Boris Johnson and Jeremy Hunt will now face off in a series of head-to-heads before the Conservative Party vote becomes known in late July.