The phrase "alleged bribes" means that there are claims or accusations of someone offering or receiving illegal payments. However, it hasn't been proven yet and is still being investigated. Full definition
Over a year of alleged bribe taking in exchange for writing favorable legislation, Assemblyman Eric Stevenson claimed more than $ 28,000 in per diem and travel expenses, much of it for non-session work. (nystateofpolitics.com)
They checked off more than a dozen potential witnesses, including Lisa Percoco — who prosecutors allege was the direct recipient of more than $ 300,000 in alleged bribe money intended to influence her husband. (buffalonews.com)
Yet when pressed specifically on the interwoven nature of the defendants actions — which include $ 322,000 in alleged bribes for Percoco in exchange for helping companies with business before the state — and those of Cuomo, Bharara refused to opine on what the governor may have known or been involved in. (politico.com)