"However, the looting and pillaging could ultimately interfere with the official investigation into the MH17 disaster," USA Today reported.
As investigators retrieved luggage from the grisly crime scene on Friday, many of the possessions had been opened and rifled through.
Items which had been left behind by the looters included a Minnie Mouse lunchbox, Winnie the Pooh stuffed animal and passports.
But the looting and pillaging was only part of the chaos at the crash site, the daily said.
"The recovery effort lacks organisation as possessions found in the debris have not been categorised or recorded.
"Unlike standard crime scene procedures, the system at the crash site is lacking in order and organisation."
The paper said the crash site has not been cordoned off and unidentified individuals were allowed into the area.
"This has encouraged mobs of looter and pillagers to swarm around the crash site looking for valuables."
MH17 was travelling from Amsterdam to Kuala Lumpur when the aircraft was hit by a surface-to-air missile (SAM) over Ukraine.
This is the second major tragedy to befall a Malaysia Airlines flight in the past four months, following the mysterious disappearance of flight MH370.
On March 8, flight MH370 departed from KLIA bound for Beijing with 12 crew members and 227 passengers on board. The aircraft has not been found despite a massive land and air search operation. - 19 July, 2014