Arthur E. P. Brome Weigall, The Life and Times of Cleopatra…
“ Cæsar, hearing of this, obliged the young King to despatch two officers, Dioscorides and Serapion, to order Achillas to remain at that place. These messengers, however, were intercepted by the agents of Potheinos, one being killed and the other wounded; and two or three days later Achillas arrived at the capital at the head of the first batch of his army of some twenty thousand foot and two thousand horse,25 taking up his residence in that part of the city unoccupied by the Romans. ”
