“In the one hundred seventy-second year, King Demetrius assembled his forces. He marched into Media to secure help, so that he could make war against Trypho. When King Arsaces of Persia and Media heard that King Demetrius had invaded his territory, he sent one of his commanders to take him alive. The general went and defeated the army of King Demetrius. They seized him and took him to King Arsaces, who put him under guard.”

About 139 BCE, King Demetrius II wanted to go to war against King Trypho. He went into Media, which was west of Teheran, and supposedly a part of the Seleucid Empire. However, when King Arsaces IV (171-138 BCE), the king of Persia and Media heard about King Demetrius in his territory, he defeated his army and captured King Demetrius II.