<sod >The rights group said there was âno evidenceâ that Mr Halawa was involved in the violence, adding that he was âdetained solely for peacefully exercising his rights to freedom of expression and assemblyâ.< eod>< sod > The group said there was âno evidenceâ that Mr Halawa was involved in the violence, adding that he was âdetained solely for peacefully exercising his rights to freedom of expression and assemblyâ.< eod>