Collins Chinese Dictionary Plus (3rd edition), 2011:
allege [əˈlɛdʒ]
(frm) vt
▶ to allege that… (=claim) 宣称(稱)… xuānchēng…
- he is alleged to have killed her
据(據)称(稱)他杀(殺)了她 jùchēng tā shāle tā