A gunman was arrested for entering a pizzeria in Washington D.C on Sunday, December 4, amidst the “Pizzagate conspiracy Theory”.

Washington police said that they detained the man with an assault rifle who entered Comet Ping Pong, a D.C pizza restaurant which was the target of fake news reports it was operating a child abuse ring led by Democratic presidential candidate Hillary Clinton and her top campaign aide.

The unidentified 35-year-old gunman was being held for questioning after police were called to the restaurant near the Maryland border

Aquita Brown, a spokeswoman for the Metropolitan Police Department in the nation's capital, said that no shots were fired and there were no injuries.

It was unclear whether the man was aware of the internet postings about Comet. Police said there was no active investigation of child abuse allegations there.

On the Politics side, Russian President Vladimir Putin called United States President Donald Trump a ‘clever man’ who should quickly understand new responsibilities.

"He is already a statesman, he is the head of the United States of America, one of the world's leading countries," Putin said in an interview with NTV TV.

"Because he achieved success in business, it suggests that he is a clever man. And if (he is) a clever man, then he will fully and quite quickly understand another level of responsibility. We assume that he will be acting from these positions," Putin said.

The Russian President also talked of his hope that Trump will restore U.S-Russia relations, and analysts said he was unlikely to want to dial up anti-Western rhetoric before Trump's inauguration in January.

Putin's comments appeared to address criticism from Trump's opponents who say his unconventional actions since the election - including railing at the cast of a Broadway show and early-morning invective on Twitter - show Trump is out of his depth.

Putin said when building relationships with other countries, Russia would respect their interests.

Meanwhile, New Zealand Prime Minister John Key unexpectedly announced his resignation on Monday, saying it was time to leave politics after more than eight years in power.

Key, who won praise for his economic stewardship after the global financial crisis, said he had no immediate future plans, but told reporters he would stay in parliament long enough for his center-right National Party to avoid a by-election for his seat.

"There is no way I could have served out a full fourth term," Key said at his weekly press conference in Wellington, citing family reasons for his departure.

The National Party caucus will hold a meeting on December 12 to decide the new party leader and prime minister. Key said he would vote for his deputy and finance minister Bill English to take over, if he decided to stand.