The phrase "rare statement" refers to a statement or comment that is not often heard or seldom said. It is something unusual or uncommon to hear or find. Full definition
«The Duke of Cambridge absolutely understands the situation concerning privacy and supports the need for Prince Harry to support those closest to him,» the rare statement read. (businessinsider.com)
The FBI also weighed in, saying in a rare statement on Wednesday that it had been «provided a limited opportunity to review this memo the day before the committee voted to release it.» (businessinsider.com)
In a rare statement, the FBI warned against the document's release, saying it had «grave concerns» about its accuracy. (theatlantic.com)