The next day, on the Sabbath, the chief priests and Pharisees went together to Pilate
and said, "Sir, we remember when jesus were still alive, he once said, 'After three days I will rise again."
Therefore give an order to have the tomb made secure and safeguarded until the third day, for fear that His disciples will come and steal Him away and tell the people that He has risen from the dead, and the last deception and fraud will be worse than the first.
"You've got soldiers guard," Pilate said to them, "go to maintain the cemetery as tight as possible."
So they went off and made the tomb secure by sealing the boulder, a guard of soldiers being with them and remaining to watch.