The ICC will look into why Sri Lanka failed to fulfil post-match media duties after Saturday's Cricket World Cup loss to Australia.
Sri Lanka won the toss put Australia in to bat but Aaron Finch's explosive 153 fired his side to an imposing total of 334-7 at The Oval.
Mitchell Starc then took four wickets as Sri Lanka's initially strong start petered out into an 87-run loss that leaves them with a single victory from five matches.
And with their chances of qualification for the semi-finals now fading fast, Sri Lanka did not send any representatives to a post-match news conference.
An ICC spokesperson said the body will be "taking it up with them".
Sri Lanka are next in action against England at Headingley on Friday.