A.T. Robertson Commentary Acts 24:9

"And the Jews also joined in the charge, affirming that these things were so." — Acts 24:9 (ASV)

Joined in the charge (συνεπεθεντο). Second aorist middle indicative of συνεπιτιθημ, old verb, double compound, to place upon (επ) together with (συν), to make a joint attack, here only in the N.T.

Affirming (φασκοντες). Alleging, with the accusative in indirect assertion as in 25:19; Romans 1:22 (nominative with infinitive, Robertson, Grammar, p. 1038).

Were so (ουτως εχειν), "held thus," common idiom.