<sod >The Panama-based Mossack Fonseca worked with 33 individuals or companies who have been placed under sanctions by the US Treasury, including companies based in Iran, Zimbabwe and North Korea, the BBC reported.< eod>< sod > Panama-based Mossack Fonseca worked with 33 individuals or companies who have been placed under sanctions by the US Treasury, including companies based in Iran, Zimbabwe and North Korea, according to the leaked documents,Â the BBC reported.< eod>