Mr Wrighton, from Banham, was found dead last Saturday morning in the woods near East Harling, prompting a huge police investigation.
No weapon has been found and no arrests have been made.
Detective Superintendent Andy Smith, who is overseeing the investigation, said: "This, as you will appreciate is a large-scale, complex and detailed investigation which involves a number of strands".
A spokesman for Norfolk Police said the arrested man is now being held in police custody.
Out walking his two dogs, Mr Wrighton was stabbed in the head and neck.
On Friday, police released CCTV footage of the last known sighting of Wrighton before he was killed.
Detectives investigating the murder of Peter Wrighton have said they will be "exploring all avenues" in their enquiries.
His vehicle, a red Skoda Fabia, was parked close to The Street, the road close to the heathland where he was walking his dogs Dylan and Gemma.
He wore a grey or blue t-shirt, grey floppy gym-style shorts above the knee and heavy duty flip flops, and was seen within the boundary of the woodland site which police are searching. He is described as being of athletic build with short dark wavy hair and dark eyes.
"White man, aged 30 to 50 years old, of a medium build wearing dark coloured clothing". He then drove his red Skoda 4.5 miles to The Street, close to the area where he walked his dogs.
"We remain concerned that we have not yet been able to trace the person or people responsible for Peter's death", he added.
Anyone with information about the murder or any suspicious activity should contact Norfolk Police immediately on 0800 056 0944 or 0207 158 0010, quoting Operation Graduate, visit the mobile police station or alternatively contact Crimestoppers anonymously on 0800 555 111.
Computer hardware stocks rebounded following recent weakness, with the NYSE Arca Computer Hardware Index climbing by 1.4 percent. WTI crude was up 0.3% at $49.72 a barrel in late European session, while Brent crude was 0.8% firmer at $53.13 a barrel.
Following the transaction, the director now owns 9,939 shares of the company's stock, valued at approximately $203,749.50. The real estate investment trust reported $0.11 EPS for the quarter, topping the consensus estimate of $0.10 by $0.01.
However, if the U.S Navy encroaches upon Chinese maritime territory, "we will not tolerate such behavior", he added. Geng said, "China has the firm determination to safeguard its territorial sovereignty and maritime interests".
He said, when we are together in government in Bihar, it is only natural that our party joins the Union government. Amit Shah said in the tweet, "I met JDU chairman Nitish Kumar at the residence yesterday".
Republican Senator Dan Sullivan said a preemptive strike against the North Korean regime would require congressional approval. The North is threatening the United States with the prospect of a nuclear-armed long-range missile, and Sen.
Scicchitano testified that it was discovered by police about a week and a half ago that footage had been deleted. Sinclair has to determine if there is sufficient evidence to send the case to county court for trial.
Egypt worldwide Mohamed Elneny sent a cross that was met by Lacazette, who headed the ball beyond Kasper Schmeichel . He added: "I know how important Giroud is, not only as a player but in the group as well".
In Madison on Friday, the glasses were sold out at Kirkland's on the Far East Side and at Toys R Us on the Far West Side. The rare event will be history on the afternoon of August 21, but you'll want to keep your eyes as healthy as possible.
In January, one ticket purchased in California matched the five white balls and Mega ball to win a $188 million jackpot. Played in 44 states, including the Virgin Islands and the District of Columbia, Mega Millions tickets were sold for $1.
The fund purchased 145,338 shares of the oil and gas exploration company's stock, valued at approximately $1,161,000. With 1.60 million avg volume, 3 days are for Unilever N V (NYSE:UN)'s short sellers to cover UN's short positions.
Fernando Llorente's future is at Swansea: Paul Clement
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China to uphold North Korea sanctions
Last week, Tillerson said North Korea needed to cease both its missile launches and nuclear weapons tests for talks to begin. That would lead to a wave of impoverished refugees fleeing north. "We will know it when we see it", he told reporters.