“While they were going,
Some of the guards
Went into the city.
They told
The chief priests
Everything
That had happened.”
Πορευομένων δὲ αὐτῶν ἰδού τινες τῆς κουστωδίας ἐλθόντες εἰς τὴν πόλιν ἀπήγγειλαν τοῖς ἀρχιερεῦσιν ἅπαντα τὰ γενόμενα.
This is unique to Matthew, who said that while the 2 women were going to the disciples of Jesus (Πορευομένων δὲ αὐτῶν), some of the custodial guards at the tomb went into the city (ἰδού τινες τῆς κουστωδίας ἐλθόντες εἰς τὴν πόλιν). These guards told or reported to the chief priests (ἀπήγγειλαν τοῖς ἀρχιερεῦσιν) everything that had happened (ἅπαντα τὰ γενόμενα). Remember these were not the Roman soldiers, but the custodial guards hired by the Jewish leaders. Once again, Matthew showed his bias against these Jewish leaders in Jerusalem.