Historical evidence of Slaughter of the Innocents besides St. Matthew's Gospel?

Besides Matthew 2:16 , >Herod perceiving that he was deluded by the wise men, was exceeding angry: and sending killed all the menchildren that were in Bethlehem, and in all the borders thereof, from two years old and under, according to the time which he had diligently inquired of the wise men. What historical evidence is there of the Slaughter of the Innocents?