"official knowledge" is a correct and usable phrase in written English.
The term can be used to refer to the body of knowledge that is accepted by authorities, experts, or professionals. For example, "The doctor consulted official knowledge when diagnosing the patient's illness."
Israel initially claimed no official knowledge of the affair, and only officially admitted paying money to Pollard for top-secret documents 10 years after he was convicted.
How could Mr Khan get up to all this without official knowledge?
Every single person with official knowledge of the rules of football so far has said it's a penalty.
In his politely modulated outburst, Colonel Dunbar, the state's first black police superintendent, spoke up in defense of the police as no other state official has since the disclosure of official knowledge of racial profiling.
While we have been working with the biggest organisations involved in financial inclusion, we are pleased that the Centre for Financial Inclusion at Accion is our official knowledge partner.
In the early part of this century I gained unauthorised access to government computer systems in the US, in a successful attempt to find evidence of official knowledge of the UFO phenomenon.
None of this sits very well with the official knowledge-society narrative.
The maps that are developed can give town officials knowledge of where their old houses are.
It was a relatively lenient sentence, perhaps mitigated by league officials' knowledge of what Rypien was going through.
Bowden cites sources and documents amply establishing links between the Search Bloc and the henchmen, known as Los Pepes -- former Escobar associates financed by the rival Cali cartel -- as well as demonstrating American officials' knowledge of those links.
Some program participants who were on the no-fly list "yet were allowed to fly on commercial flights" with the program officials' knowledge and approval, and "could have" flown without it, the report said.
