Lucian of Samosata was a satirist in 2nd century Greece. He wrote in one of his works about early Christians.

The Christians ... worship a man to this day – the distinguished personage who introduced their novel rites, and was crucified on that account.... [It] was impressed on them by their original lawgiver that they are all brothers, from the moment that they are converted, and deny the gods of Greece, and worship the crucified sage, and live after his laws. Source: Lucian, "The Death of Peregrine", 11-13 in, in The Works of Lucian of Samosata, translated by H.W. Fowler and F.G. Fowler, 4 vols. (Oxford: Claridon 1949), volume 4., cited in Habermas, The Historical Jesus, 206.

Although Lucian does not mention Jesus by name it is clear that he is talking about Jesus. Lucian does not say explicitly, the Christian denial of other gods combined with their worship of Jesus implies that Jesus was no mere human.

Another source of information comes from Pliny the Younger to Emperor Trajan. Pliny was the governor of Bithynia in Asia Minor