“Three years later, word came to Judas Maccabeus and his men that Demetrius, the son of Seleucus, had sailed into the harbor of Tripolis with a strong army and a fleet. He had taken possession of the country, having made away with Antiochus and his guardian Lysias.”
This is similar to 1 Maccabees, chapter 7. About 161 BCE, King Demetrius I, who ruled the Seleucid Empire from 162-150 BCE, came with a strong army and navy fleet into the sea town of Tripolis. He was the son of King Seleucus IV and brother to King Antiochus IV. He had killed King Antiochus V, his nephew, and his guardian Lysias, who had run the government.