Paul McClean, 24, who worked for the Financial Times, was found on Friday in a coastal village lagoon a day after he went missing.
According to reports, Mr McClean was holidaying in Sri Lanka with friends and authorities believe he was dragged away by a crocodile after he stepped into the lagoon about 220 miles east of the capital Colombo.
The post-mortem examination found he drowned after being bitten on his right leg, but it did not confirm if it was a crocodile that grabbed him, said a police official who saw the report.
The official added: “There were six teeth marks of an animal on his right leg. There was no specific mention of a crocodile attack because the JMO (judicial medical officer) could not verify it immediately.”
Magistrate Mohamed Hilmy, who visited the coastal village on Friday, ordered an inquest to be held on Monday.
The FT’s managing editor James Lamont described him as “a talented, energetic and dedicated young journalist”.
He said: “Our thoughts are with his family, friends and loved ones. We are in touch with them, doing all we can to help during this difficult time.”
Margaritis Schinas, spokesman for European Commission chief Jean-Claude Juncker, said Mr McClean, who had also worked in Brussels for the FT, was “well known and well liked”.
He added: “He was an extremely talented and dedicated young journalist. He had an exceptional eye for detail and never shied away from difficult stories.
“But above all, Paul was a gentleman and an absolute pleasure to work with. He will be fondly remembered and greatly missed by all in the spokespersons’ service and in the wider Brussels community.”
Although crocodile attacks are rare in Sri Lanka, earlier this month wildlife authorities reported that a crocodile had seriously injured a wild elephant in the south of the island.
During monsoon floods in May, authorities warned people in inundated areas to be aware of stray crocodiles.