WikiLeaks clueless on origin of data

London:  The editor-in-chief of WikiLeaks claims his organisation doesn't know who sent it some 91,000 secret US military documents, telling journalists that the website was set up to hide the source of its data from those who receive it.

Julian Assange didn't say whether he meant he had no idea who leaked the documents or whether his organisation simply could not be sure.

But he did say the added layer of secrecy helps protect the site's sources from spy agencies and hostile corporations.

No secrets kept

"We never know the source of the leak," he told journalists gathered at London's Frontline Club late on Tuesday. "Our whole system is designed such that we don't have to keep that secret."

US officials said US operatives inside Afghanistan and Pakistan may be in danger following the massive online disclosure on Sunday.

Meanwhile, in Afghanistan, at least 25 Afghan passengers were killed and 20 wounded when their bus was hit by a roadside bomb in western Afghanistan on Wednesday, the government said.