The phrase "an additional investigation" is correct and usable in written English.
It can be used when referring to a further inquiry or examination that is being conducted in addition to previous ones.
Example: "After reviewing the initial findings, the committee decided to conduct an additional investigation to gather more evidence."
Alternatives: "a further investigation" or "an extra inquiry".
President Bush has resisted the creation of an outside body, saying Congress can handle the job and suggesting that an additional investigation might interfere with national security.
The defence asked for an additional investigation to establish whether the bank had turned a blind eye to his activities, but the judges turned down the request.
We have also asked the factory to submit to an additional investigation of its workplace practices by an external monitoring organisation, and factory management has agreed.
During the 2008/2009 season, an additional investigation was conducted to evaluate the use of thidiazuron and hydrogen cyanamide for harvest scheduling (Experiment 2).
Council members Mary M. Cheh (D-Ward 3), Kenyan R. McDuffie (D-Ward 5), Charles Allen (D-Ward 6), Vincent C. Gray (D-Ward 7) and Anita Bonds (D-At Large) said a reprimand without an additional investigation was appropriate.
Deciding to proceed without conducting an additional investigation would not only have a lasting impact on the Senate's reputation, but it will also negatively affect the great trust necessary for the American people to have in the Supreme Court," Carlson wrote in the letter, obtained by The Washington Post.
a Additional investigation normal.
However, MRI is a reliable additional investigation to establish other intraarticular lesions.
The presence of a mixed infection within a herd warrants additional investigation with greater attention paid to the presence of other species on the farm.
I intend therefore to propose a mechanism whereby additional investigation time can be added in complex merger cases, always with the agreement of the parties.
However, such a scenario requires additional investigation.
