According to a person present at the ground the umpires "suspected" a case of ball tampering: "The umpires are suspecting that there has been a ball-tampering situation. They wanted to change the ball, but without actually pointing a finger to Sri Lanka. The Sri Lankan team management is protesting against that."
It is understood that the umpires were concerned about the condition of the ball at the end of the first day's play of the second Test. "We did see the umpires looking at the ball a few times yesterday, but there was no statement made at the end of the day," the official said. "It all happened this morning."