The second player is reportedly still in a critical condition in hospital.
An unnamed player from the visiting Durham City Clem's Pirates Rugby team, has passed away on Monday (14) under tragic circumstances according to informed sources.
Clem Pirates were in Colombo on tour, having arrived last Wednesday, before facing Ceylonese Rugby and Football Club (CR & FC).
Tom Baty, 26, remains in hospital where he is being treated.
After the match, the team went out for a meal before they visited a nightclub in the Kollupitiya area of the city.
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The deceased player and other player were hospitalized by the hotel management as they were suffering from respiratory issues.
One died shortly after being admitted to hospital less than two hours later.
British rugby is in shock following the death of a club player while touring Sri Lanka.
After emergency treatment a player has passed away early morning on Monday (14) while the other player is now under treatment in the Intensive Care Unit of the private hospital.
Sri Lanka Rugby Football Union director Rohan Gunerathne said the organisation was looking into the matter, but confirmed nothing happened on the rugby pitch during the match.