Two suicide bombers have blown themselves up in Casablanca close to the city's American Cultural Centre, officials have said.
Iqbal Ilhami, Al Jazeera's correspondent in Morocco, said there were no initial reports of casualties from the bombing on Saturday.
"Only the two bombers were killed," sources told the Reuters news agency.
It was not immediately clear if Saturday's bombing was a repeat of suicide bombings that struck the city earlier in the week, an interior ministry official said.
Three suicide bombers blew themselves up in Casablanca on Tuesday and police shot and killed a fourth man who appeared to be preparing to detonate explosives, authorities said.