Sweden on Sunday probed two bomb blasts that killed a person in central Stockholm as a "terrorist crime", as an Al-Qaeda-linked website claimed one of its militants had carried out the suicide attack.

Saturday's explosions -- a suspected suicide attack and separate blast -- targeted Christmas shoppers in a busy pedestrian quarter of the Swedish capital. Two people were also injured.

Iranian President Mahmoud Ahmadinejad on Sunday invited Jordan's King Abdullah II to visit Tehran, in a letter delivered by top aid Esfandiar Rahim Mashaie, a palace statement said.

"His majesty met Esfandiar Rahim Mashaie, who delivered a letter from President Ahmadinejad about bilateral ties as well as regional and international issues," it said.

Six foreign soldiers were killed Sunday following an attack by insurgents in Afghanistan's Taliban-hit south, NATO's International Security Assistance Force (ISAF) said in a statement.

The coalition force would not give further details of the incident, one of the deadliest single attacks in recent months, and would not reveal the soldiers' nationalities, in line with its policy.

Twin blasts in central Stockholm killed one person and injured two others, in what Sweden's foreign minister said was a "terrorist" attack that could have had "catastrophic" consequences.

The explosions on Saturday, in a busy part of the capital packed with Christmas shoppers, came minutes after a Swedish news agency received a message denouncing Sweden's military presence in Afghanistan and threatening deadly attacks.

Wikileaks soon won't be the only secret-spilling game in town.

A former co-worker of WikiLeaks founder Julian Assange plans to launch a rival website Monday called Openleaks that will help anonymous sources deliver sensitive material to public attention.

Hackers claimed Wednesday to have attacked the websites of Mastercard and a Swiss bank in apparent revenge for their decisions to choke off funding for the whistleblowing website WikiLeaks.

But WikiLeaks insisted it had nothing to do with the hacking.

A new Michael Jackson music video is hitting the Internet preceding the launch of a posthumous Jackson album.

The video, previewed by The Associated Press, debuts at midnight Thursday Eastern time on worldwide websites, including MichaelJackson.com, said Jackson estate co-administrator John Branca.

A fire killed at least 81 inmates in Santiago early Wednesday in what officials called the worst ever disaster at a Chilean prison.

"It's an immense tragedy -- probably the worst in the history of our prison system," said Health Minister Jaime Manalich, after firefighters extinguished the blaze that swept through a jail in the capital city.

At least 17 people were killed in a suicide attack on a market in Pakistan's northwestern town of Kohat on Wednesday, the local police chief said.

The top U.S. military officer on Wednesday warned North Korea that the U.S. commitment to helping South Korea defend itself is "unquestioned," even as he pressed China to use its influence to push its ally Pyongyang to change.

Navy Adm. Mike Mullen, the U.S. chairman of the Joint Chiefs of Staff, called recent North Korean aggression, including an artillery attack last month that killed four South Koreans, "belligerent, reckless behavior." He said China appeared unwilling to use its enormous leverage to rein in the North.