The phrase "additionally said that" is correct and usable in written English.
It can be used to introduce an additional statement or piece of information that someone has communicated.
Example: "The spokesperson additionally said that the company would be expanding its operations next year."
Alternatives: "also mentioned that" or "further stated that".
In its report, CNN additionally said that state insurance commissioners would be allowed to block the renewals of non-compliant plans, if they wished.
On its earnings call, Outerwall CEO Erik Prusch additionally said that Gazelle will "enable ecoATM to gain critical mass, provide margin revenue uplift opportunities and leverage a direct-to-consumer channel for collected devices".
Stevin additionally said that Kills was stronger as a "visual artist".
Rowling's favourite aspect of this book was introducing the character Remus Lupin, Rowling additionally said that Prisoner of Azkaban was "the best writing experience I ever had...I was in a very comfortable place writing (number) three.
You additionally say that the Fulbright Commission is keen to "bring awardees into contact with a wide range of stakeholders".
We additionally say that a class \ \textbf{C}\) is closed under \(\leq_P\) if \(Y \in \textbf{C}\) and \(X \leq_P Y\) implies \(X \in \textbf{C}\).
Having said that, additionally we have made available some 2,000 National Guardsmen.
Additionally, it should go without saying that far too many people are murdered in this country even today.
Additionally, Scherr said that his staff had lowered the Olympic committee's expenses and revenue projections through 2004, and that two new sponsorship deals were signed this week.
Additionally, he said that the flow of actresses could be "cut off at the source" by having F.B.I. agents infiltrate improv classes.
Additionally, Picard said that he subpoenaed records from Merrill Lynch, among other third parties, but that it had failed to turn over anything.
