Earlier, Dayasiri Jayasekera, Sri Lanka's Sports Minister had said that they would carry an investigation, amid allegations of players being involved in 'scandalous behaviour' during the tour.
The 28-year old, who was neither denying nor accepting the allegations, revealed that an official probe had begun into the allegation that players had attended parties till late night, Sport24 reported.
Sri Lanka suffered a 3-1 defeat in the five-match ODI series and also lost the two-match T20 series 0-2 in a tour to New Zealand.
Describing the tour as `demoralising`, Mathews said that his side could have performed better, but insisted that they were not playing to lose.
Following the defeat in the T20 series, the defending world champions also lost their number one ranking in the format, dropping to third behind the West Indies and Australia.
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