An allegation is a party’s statement of what they think happened and what they hope to prove moving forward in a case.
Merriam-Webster Online Dictionary
allegation (noun)1.
the act of - alleging
2.
a positive assertion , specifically a statement by a party to a legal action of what the party undertakes to prove
3.
an assertion unsupported and by implication regarded as unsupportable - vague allegations of misconduct
Synonyms:
accusation, accused, alleged