The official was not authorized to talk to the media and spoke on condition of anonymity.
The UK said this month it would review long-term visas of wealthy Russians after the poisoning.
As a new citizen, "Abramovich is exempt from taxes in Israel on income earned overseas for ten years, and need not declare the sources of that income for the same period", the Times of Israel says.
Relations between Moscow and London have been strained since the poisoning of former Russian double-agent Sergei Skripal in Britain in March, an act Britain has blamed on Russia but in which the Kremlin denies any involvement. It quoted two unnamed sources as saying the football team owner's British visa expired in April.
He has also reportedly bought a property in the city.
Joe Skipper Reuters Abramovich's little boat
The British government said it would not comment on individual cases.
Abramovich has been a regular visitor to Israel and is reported to have bought a former hotel in Tel Aviv, close to the Mediterranean coast.
Israel passport holders are allowed to enter Britain without a visa for short stays.
As a new citizen, Abramovich is exempt from taxes in Israel for 10 years, and need not declare the sources of his income for that period.
Mr Abramovich is now in Tel Aviv but a spokesman would not comment on media reports that his citizenship had been granted. It is not known whether a foreign passport was issued to the Russian businessman. But he added: "There is a broader question about what the United Kingdom can do to crack down on people close to Putin who may have illicit or ill-gotten wealth".
We expect the company to reveal Moto Z2 Play may come with face unlock feature, which has become a new norm in the industry. Fueled by a massive 4000mAh battery, the Moto G6 Play is good enough to last even the heaviest days of usage easily .
Just like modern stars Cristiano Ronaldo and Lionel Messi have made soccer all the more popular in the United States of America. Still unsure? The series has been shown online since 2010, and the demand to watch it shows the growth is likely to continue.
Ryan Fredericks certainly seemed to let the occasion better of him when he stamped on Jack Grealish on the half-hour mark. Asked whether he saw himself remaining at Craven Cottage next season, Mitrovic said: "I don't know".
Female Rebel BBL starts their season from the 9th f December, which is 10 days earlier from the male season of KFC BBL games. Fans of cricket across the world can see the online stream at the official Australian cricket website, and throw its app.
Usually, there are some doubts about the safety of online casinos since there are plenty of cheaters in the network. Software used in the online casino belongs to individual companies and not an own developments of casino owners.
All three of Disney's previous Star Wars movies made more domestically in their opening weekends than Solo did worldwide. Abrams's " Star Wars: Episode IX ", the final installment of Disney's first main trilogy, opens right before Christmas.
On Salah, Klopp told BT Sport: "It is unbelievable". "It's a shame it was in a game like this, after a season like this". No teammate came to console him and he then lay flat out, face to the turf hiding his tears.
A delegation of United States envoys met with North Korean officials Sunday in Panmunjom to work out details of the summit. Moon could travel to Singapore for a three-way summit with Kim and Trump next month, Yonhap News Agency reported Monday.
After winning promotion at Wembley and Fulham heading to the top tier, Mitro was asked about his own future. It is stunning how one goal from a 27-year old Scotsman could earn a team over $125 million for next season.
With plenty of points to be won and lost, the title race is still very much on and Arsenal will be confident of bridging the gap. Defensively, Arsenal have improved since Shkodran Mustafi joined the club in the summer but there is still room for improvement.