The International Cricket Council says there is "no substance" to claims that Pakistan players came into contact with bookmakers in Sri Lanka.
Pakistan players had complained to team manager Yawar Saeed that "suspicious people" attempted to make contact with them in the team hotel in Colombo.
The Pakistan Cricket Board passed the matter to the ICC's Anti-Corruption and Security Unit.
The ICC says it's satisfied that "no evidence of any such contacts exists".
The inquiry revealed no suspicious activities had taken place.
The ACSU was formed in 2000 following match-fixing controversies in the cricketing world, which saw several leading players banned for life following ACSU investigations.
Pakistan's tour of Sri Lanka is almost over - with Sri Lanka having won the three-Test series 2-0 and the five-game one-day international series 3-2.
The tour concludes with a Twenty20 international in Colombo tomorrow.