Passage 7.15.5
ἐς μὲν οὖν τὴν Κριτολάου τελευτὴν καὶ ἄλλα πάρεστιν εἰκάζειν· Ἀρκάδων δὲ ἐξεστρατευμένοι λογάδες χίλιοι, οἳ Κριτολάῳ τοῦ ἔργου μετέσχον, προῆλθον μὲν ἄχρι Ἐλατείας τῆς Φωκέων καὶ ἐς τὴν πόλιν ὑπʼ αὐτῶν κατὰ συγγένειαν δή τινα παλαιὰν ἐδέχθησαν· ὡς δὲ τοῖς Φωκεῦσιν ἡ Κριτολάου συμφορὰ καὶ Ἀχαιῶν ἀπηγγέλλετο, ἀπελθεῖν ἐκ τῆς Ἐλατείας κελεύουσι τοὺς Ἀρκάδας.
Regarding, therefore, the manner of Critolaus' end, there are indeed other possibilities one may conjecture. A chosen force of a thousand Arcadians, who had joined Critolaus' enterprise, advanced as far as Elateia in Phocis, and were admitted into the city by the inhabitants themselves because of some ancient kinship. But when the disaster of Critolaus and the Achaeans was reported to the Phocians, they commanded the Arcadians to depart from Elateia.