Australia's most secretive spy agency has reportedly passed intelligence to the US implicating Indonesia's military in the ambush near Papua's Freeport mine which killed two Americans, and an Indonesian.
The Indonesian army has denied claims it was involved in the attack in a bid to implicate the Free Papua Movement, or OPM, and to have it outlawed as a terrorist organisation.
But The Washington Post says the US had obtained reliable human intelligence about Indonesian military plans, including discussions involving Indonesia's commander-in-chief, Endriartono Sutarto.
The paper says intelligence had now been backed by signals intelligence likely to have been gathered by Australia's Defence Signals Directorate, which monitors communications, including mobile phone, radio and internet messages.
US officials said their intelligence did not detail a specific attack, nor did Indonesian military officers call explicitly for the killing of Americans or other foreigners.
But they say it did clearly target Freeport.
The US described the assault as a terrorist attack.
