Shanaka was seen trying to pick the seam ball in the 50th over of India's first innings for which he was docked 75 per cent of his match fees by ICC Match Referee David Boon.
Shanaka admitted to match referee that he did try to "alter the condition of match ball" (refined version of ball tampering).
When quizzed if Shanaka was frustrated with no help from the track, Gurusinha said: "It is actually error of judgement on Dasun's part. Just one over it happened. None of the team members knew that and it wasn't planned or anything. He is very remorseful about what had happened. He takes full responsibility for that."
"The senior players have spoken to him. He needs support. He is a young kid and this is his third Test match. The team has got disciplinary guidelines and he has to follow that. I don't want to go into details. We had a chat with Match Referee. We have seen all of that. The best thing for the team is to let it go," concluded the member of the 1996 World Cup campaign.
The charge against Shanaka was laid by on-field umpires Joel Wilson and Richard Kettleborough, third umpire Nigel Llong and fourth umpire Chettithody Shamshuddin after the end of second day's play.
Disclaimer: No Business Standard Journalist was involved in creation of this content