US police have arrested a man who has confessed to being the sexual predator sought in a global paedophile manhunt launched just two days ago by Interpol, the police agency said on Thursday.

Wayne Nelson Corliss, 57, was arrested at his apartment in Union City in the state of New Jersey on Wednesday by US immigration agents, Interpol said on its website which showed a picture of the fair-haired, bespectacled man.

"The arrest of the suspected child sex abuser ... came about as a result of independent tips provided via the Internet to Interpol's headquarters in Lyon by three individuals living in the United States," it said.

Corliss confessed during police questioning to molesting the Asian boys and sharing pictures of the abuse over the Internet, Interpol said.

The worldwide police agency said its website had had about 250,000 visits a day - 10 times more than usual - since it launched its manhunt, codenamed Operation IDent, on Tuesday when it posted images of the suspect on its site.

The man is accused of distributing hundreds of photos on the Internet of his abuse in 2000 and 2001 of three Southeast Asian boys aged between six and 10.

It was only the second time Interpol had made such a public appeal, following a search named Operation Vico for another suspected paedophile, Christopher Paul Neil, a 32-year-old Canadian who was arrested in Thailand in October.

Interpol had said on Wednesday that its appeal produced more than 200 leads - potential names, locations and photos of the suspect - in the first 24 hours.

Thai and Cambodian police were on high alert after the search was launched. An Interpol official said the photos discovered on the Internet were "typical of paedophiles frequenting sexual tourism hotspots in South Asia, especially Thailand and Cambodia."

The suspected child sex predator featured in approximately 100 images in a series of around 800, which were believed to have been taken in Southeast Asia and depicted the sexual abuse of at least three boys.

The first pictures of the man were originally discovered by police in Norway in March 2006.

After receiving the pictures from Norwegian police, Interpol's child exploitation unit at its headquarters in the French city of Lyon circulated the images to its global network of experts to try and identify the man.

Interpol Secretary General Ronald Noble praised the rapid response to the global appeal, calling it an "outstanding achievement and credit to the citizens, media and law enforcement worldwide who responded."

"Cases like Operation Vico and Operation IDent show us all that keeping our children safe from sexual predators at home in the 21st-century can best be achieved by ensuring that strong local, national and international police institutions cooperate seamlessly across borders and across the digital divide worldwide," he said in a statement.