"has previously been informed" is a correct and usable phrase in written English.
You may use it when you wish to refer to something that someone already knows due to being told or informed about it previously. For example: "The police officer has previously been informed of the suspect's whereabouts."
On Thursday evening, the Department for Work and Pensions (DWP) confirmed it had previously been informed of the report and received assurances at the time but declined to say why it had not launched its own inquiry.
On Tuesday, Secretary of State Hillary Rodham Clinton told reporters in Washington that she had previously been informed of the trial date by the detainees' families and expressed hope that Mr. Bauer and Mr. Fattal would be released before the trial took place.
Duke Béla, who had previously been informed by his partisans in Andrew's court that he would be murdered on the king's order if he opted for the crown, chose the sword.
The state identified the person whose files were breached only as "a deceased patient". A source close to Jackson's case said his legal team had previously been informed by UCLA officials that the singer's medical files had been improperly accessed after his unexpected death June 25 last year at the age of 50.
Participants were classified as hypertensive aware if they reported that they had previously been informed by a health professional that they had hypertension.
The exclusion criterion 'previous education' was assessed by asking whether the patient had previously been informed in any way about IFG or diabetes.
The teenagers' parents had previously been informed by the school about the peer-led sex education program, and they were given the option of refusing the program; in the which case, the pupil went to study in another room.
In total, seven women reported that they had had a pathogenic mutation (true positive results) after DNA testing for BRCA mutations (lifetime risk changed to 60-80%), three of whom had previously been informed that they had a slightly or moderately increased risk.
Greg Hunt, the federal environment minister, has previously been at pains to inform the world, via the UN, which has threatened to list the reef as "in danger" next year, that the reef is still in good shape and that his Reef 2050 plan should be enough to return it to its halcyon days.
13 A process for rating government action on obesity prevention has previously been used in Australia, 15 whereby informed, non-government public health experts annually rate their state government's recent progress on obesity prevention against a series of good practice indicators.
