The phrase "already been implicated in" is correct and usable in written English.
It can be used when discussing someone's involvement or association with a particular situation, often in a negative context, such as a crime or scandal.
Example: "The politician has already been implicated in several corruption scandals, raising concerns about his integrity."
Alternatives: "previously involved in" or "already associated with".
Although the causes of schizophrenia are unknown, inflammatory processes have already been implicated in it.
Future research will focus on parasites suspected of causing mental disorders – T. gondii has already been implicated in the development of schizophrenia.
And some of the genes in FOXP2's network have already been implicated in diseases that include disorders of speech, confirming its importance in these faculties.
He has already been implicated in war crimes committed during his term in office, notably in connection with the 1973 Chilean coup.
Earlier research anyway raises doubts over whether the others will continue to be immune.Position 129 had already been implicated in human susceptibility to TSEs.
Indels have already been implicated in some disorders such as Huntington's disease, in which repeated expansions of a short, three-nucleotide stretch increase the severity and decrease the age of onset of the disease.
Amphibian trade, for purposes such as research, food and the pet trade, has already been implicated in the global spread of Bd14,17, which has led to declines or extinctions of hundreds of amphibian species18,19.
That incident followed the Sept. 16 massacre in Baghdad's Nisour Square, where 17 Iraqis were killed by security forces from Blackwater USA, which had already been implicated in nearly 200 other shooting incidents since 2005.
China, Russia and North Korea have already been implicated in cyberattacks against U.S. institutions and businesses.
Azem Syla, a high-profile parliamentary deputy for the acting prime minister's party, has already been implicated in the scandal.
Three officials of the Defense Ministry's intelligence bureau have already been implicated in the slaying, but the extent of their involvement is still unclear.
