Simon Levy, secretary-general of Casablanca’s Jewish community, also accused the United States of "implicitly justifying" Yasin's assassination, in a statement on Wednesday.
"The assassination of Shaikh Yasin is an act of bestiality, but worse still is the incredible arrogance of [Israeli prime minister Ariel] Sharon who claimed responsibility for the crime in the name of the war against terrorism," said Levy.
"Is there any terrorism worse than state terrorism?" he asked.
Levy pointed out that Washington included the resistance group on a list of "terrorist" organisations.
"Is the organisation which killed [former Israeli prime minister Yitzhak] Rabin on the list?" asked Levy.
Morocco's Jewish community, which once numbered more than 200,000 people, now consists of about 4000 who live mainly in large cities such as Dar al-Baida (Casablanca).