The wife of 38-year-old Evert Mocodompis could not attend his funeral in Jakarta because she gave birth to their second child the day before he was killed.

He died while working in the restaurant of the JW Marriott hotel on Friday. Family and friends sang hymns and tossed flowers on his grave.

''What broke my heart is the fact that Evert passed away before he could see his newborn baby son,'' father Victor said.

The bodies of the three Australians killed in last week's attacks are to be flown home within days.

Garth McEvoy, Nathan Verity and Canberra's Craig Senger were among the nine people killed in the coordinated suicide bombing.

Police yesterday continued to piece together bomb fragments, body parts and other clues gathered from the Marriott and the Ritz-Carlton, which was bombed within minutes of Friday's first blast.

Police have said explosive material recovered at the hotels was ''identical'' to that used by the South-East Asian terrorist network Jemaah Islamiyah in earlier attacks.

An unexploded bomb left in a room of the Marriott resembled devices used in attacks on Bali and one found in a recent raid against the network on an Islamic boarding school in Central Java.

The suicide bombers who killed seven people on Friday and injured 50 are believed to have belonged to Jemaah Islamiyah ''because there are similarities in the bombs used'', Major General Nanan Sukarna said yesterday.