Problem: Article: He was first arrested in March by officers from Operation Yewtree, set up after claims of sex abuse were made against BBC presenter Jimmy Savile.
His arrests are not connected to the Savile investigation.
The Metropolitan Police said an 83-year-old had been "further arrested in connection with further allegations", and rebailed until later in August.
Operation Yewtree was set up following the death of Savile in 2011, when hundreds of sex abuse allegations came to light.
The Met Police have not named Mr Harris, instead describing him as Yewtree 5.
He has been a fixture on British TV screens for more than 40 years, having arrived in the UK from his native Australia in 1952.
In May, Mr Harris, who lives in Berkshire, made his first public appearance since his arrest at a live show in Bristol.
He received multiple standing ovations and thanked fans for their support.
Operation Yewtree has three strands. One is looking specifically at the actions of Savile, while the second strand concerns allegations against "Savile and others".
The third strand relates to alleged complaints against other people unconnected to the Savile investigation.
Answer: [[Australian entertainer Rolf Harris has been re-arrested by police over further allegations of sexual offences.]]

Problem: Article: The ex-Newcastle loanee was booked before scoring one of the goals in a 2-1 win over CSKA Moscow that took the Dutch league leaders into the knockout stage for the first time since 2007.
However, key midfielder Andres Guardado is set to return for PSV.
Atletico will have midfielder Augusto Fernandez back after a knee injury.
The Spaniards, beaten finalists in 2014, have not won in four knockout games against Dutch opposition in the Champions League.
Diego Simeone's side has also struggled for goals this season, with their total of 35 the lowest in the top seven of La Liga.
Antoine Griezmann is their top scorer with 19 goals and midfielder Koke is backing the France international to end a quiet spell of just one goal in his last seven appearances.
Koke said: "We have to be more aggressive in attack and when we achieve that we'll attain our objective.
"Griezmann is a truly great player and his goals will come. They will come when you least expect them."
PSV have won their last eight matches and are unbeaten in 18 games but have had trouble scoring penalties.
They had missed eight out of their last 12 attempts before Gaston Pereiro scored from the spot in a 2-0 win against Heracles Almelo last Saturday and the midfielder is set keep the job.
Coach Phillip Cocu said: "Gaston immediately said he felt good and wanted to take it. If he takes it like that, then he can take the next one, too."
Answer: [[PSV Eindhoven will be without suspended captain and top-scorer Luuk de Jong for the home leg of their last-16 Champions League tie against Atletico Madrid.]]

Problem: Article: Power demand is expected to fall and then surge.
As the moon obscures much of the sun, the electricity generated by solar panels is expected to drop by up to 75%.
But National Grid believes the overall impact will be "manageable".
Much more electricity is generated from solar panels now than than during the last eclipse in 1999.
It is the first time that an eclipse in Europe is expected to have an impact on the operation of electricity grids.
Germany faces the biggest test, with about 39GW (gigawatts) of installed solar capacity.
The UK has 5GW of solar, the equivalent to the power output from about eight to 10 gas fired power stations.
But while the amount of electricity generated from solar will fall during eclipse, National Grid is not expecting any major impact.
"This loss of solar is entirely manageable," said a National Grid spokesperson. "We have a range of tools in place to manage any effects of the eclipse and balance the network."
The eclipse will start at around 08:45 on Friday and is due to last for a couple of hours.
It should be visible in much of the UK.
But with cloudy weather now expected, National Grid has revised down its forecast for the likely impact to energy supplies.
At that time of day, about 1,000MW (megawatts) of power would be generated from solar (1,000MW is equal to 1GW).
That is expected to fall by around 850MW.
Normally, that shortfall would need to be made up by bringing other power plants on to the system.
But based on an analysis of what happened during the previous eclipse in 1999, National Grid expects many people across Britain to stop their normal activities to observe the phenomenon.
That is expected to cause a fall in power demand on the network of about 1,100MW.
After the peak of the eclipse at 09:30, power demand is then expected to surge by 950MW as people resume normal activities.
The impact elsewhere in Europe could be more profound.
Europe's total solar power output could drop by as much as 34GW if it's a clear day, according to the organisation that represents network operators.
That's the equivalent of the output of around 80 gas-fired power stations gradually fading out of the European system as the eclipse happens, then fading back in again.
The European Network Transmission System Operators for Electricity has warned that the risk of an incident such as a power cut can't be completely ruled out.
Half of the total impact is expected in Germany. Other major users of solar power including Italy (19.7GW) and Spain (6.7GW) are expected to face challenges too.
It says the main challenge will be balancing the network in real time without causing blackouts or overloads.
The UK won't see a solar eclipse on this scale until 2026.
How to watch the eclipse safely
Why don't we see an eclipse every month?
Solar power overall provides some 1.5% of the UK's total annual power output.
But Leonie Greene of the Solar Trade Association believes the eclipse should not be a cause for concern.
"At this time of year, in the morning, the impact of the eclipse on solar output will be particularly small," she says.
"The impact of the eclipse on solar will be known by grid managers and it will pose no problem to the power supply.
"Far more challenging is the surge in power demand after the eclipse as everyone goes indoors for a cup of tea."
Answer: [[Friday's solar eclipse will present a significant challenge for the UK's electricity network and be an unprecedented test for operators of power networks.]]

Problem: Article: Shares in Standard Life and Aberdeen Asset Management were higher after they confirmed they had agreed a tie-up, creating a company overseeing assets worth Â£660bn.
Standard Life shares rose 6%, while FTSE 250 member Aberdeen Asset Management climbed 4%.
By the close, the FTSE 100 was down 24 points at 7,350.12.
Mining companies were among the biggest fallers on the index as the price of copper fell. Anglo American dropped 2.8% while Glencore was down 3.5%.
Banking shares across Europe came under pressure after Deutsche Bank announced plans to raise 8bn euros through a share sale to bolster its finances. Shares in Deutsche were down 3.8% in Frankfurt.
On the currency markets, the pound fell 0.4% against the US dollar to $1.2247 but was little changed against the euro at 1.1567 euros.
Answer:
[[The London stock market closed lower as falling mining shares outweighed news of a fund management merger.]]