The phrase "allegedly associated" is correct and usable in written English.
It can be used when discussing claims or accusations that have not been proven or confirmed, often in legal or journalistic contexts.
Example: "The suspect is allegedly associated with a criminal organization, but no charges have been filed yet."
Alternatives: "reportedly linked" or "purportedly connected".
Moving in the last hour of darkness, they got in place for coordinated raids on homes, offices and a sawmill allegedly associated with the syndicate.
On December 29th, the White House announced the expulsion of thirty-five Russian diplomats allegedly associated with Russia's bid to "influence the election, erode faith in US democratic institutions, sow doubt about the integrity of our electoral process, and undermine confidence in the institutions of the US government".
Just south of there is East Haddam, home of the "Moodus noises," persistent rumbling groans allegedly associated with tectonic shifting, but perhaps actually caused by highly focused Yankee and Red Sox energies grinding against one another at a major stress point.
Cyber experts hired by the Democratic Party and by Clinton have concluded, based on Cyrillic characters and Russian IP addresses allegedly associated with Russian government hackers, that the Kremlin is conducting cyber warfare against Obama, Clinton, and the Democratic Party.
Mazzullo is reportedly a friend of Mob Wives cast member Leah DeSimone, whose father is allegedly associated with The Outfit.
The former president is also allegedly associated with a tax fraud case involving a company owned by Lázaro Báez.
The massacre decimated the world's third-largest Communist Party (behind those of the Soviet Union and China), and untold numbers were tortured and killed simply for allegedly associating with communists.
He also described a senior policeman as having close links with the president but "allegedly closely associated with the 'kwe kwe' death squad responsible for extrajudicial killings".
Dominique had voiced disappointment with Aristide and allegedly corrupt practices associated with his Family Lavalas party.
Most recently, Matthew Keys, a 26-year-old social-media editor at Reuters, who allegedly assisted hackers associated with Anonymous (who reportedly then made a prank change to a Los Angeles Times headline), was indicted on federal charges that could result in more than $750,000 in fines and prison time, inciting a new outcry against the law and its overly harsh enforcement.
Bank errors with serious consequences continue to pile up, and not only because of the "robo-signing" that has become so closely associated with allegedly wrongful foreclosures.
