The FA's rules regarding match-fixing state that: "Fixing is arranging in advance the result or conduct of a match or competition, or any event within a match or competition".
The investigation comes after Paddy Power confirmed they had paid out a combined total of £3,500 to three punters who bet on the time Terry would be substituted at odds of 100-1.
"To be honest the only mistake here is we should have clocked sooner there'd be another cringe-worthy Chelsea send-off for JT". Personally, I don't think Conte deserves some of the praise lavished on him.
Now it is Terry's turn to leave the Blues after almost 500 appearances with the club and was farewelled in the 5-1 victory over Sunderland at the weekend.
The Football Association is yet to comment on the matter but Press Association Sport understands there has been communication with betting companies, with the national governing body requesting any relevant information.
While he said that a few days before Chelsea's final Premier League match of the season, the five times Premier League victor seemed to have changed his mind during Chelsea's trophy presentation ceremony.More news: Trump tells Middle East to 'drive out' extremists
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Only Jose Mourinho's 2004-05 Chelsea side have earned more points, as he led them to a record-breaking 95 points.
Premier League champion Chelsea celebrated their title in style with a 5-1 victory over relegated Sunderland.
The visibly emotional former England captain thanked owner Roman Abramovich, the supporters, his wife and children as well as staff and players in an address at the end of the game.
Chelsea manager Antonio Conte has been rewarded for an excellent first year in English management by being named LMA Manager of the Year.
The Italian tactician will now hope to cap off the season in style by winning the FA Cup to deliver Chelsea the double.
More specifically, Terry revealed that following the game at Wembley on Saturday he will be taking a week's holiday which is when intends to make the decision on his future.