A third suspected suicide bomber has blown himself up following a police chase in a Casablanca slum.
Two other suspects died earlier after police surrounded their house. One was shot dead. The other detonated the belt he was wearing.
Police say bombers have started wearing their belts at all times so they won’t be caught alive.
Last month, security forces claim to have foiled a plot to blow up foreign ships and hotels in Casablanca.
More than 40 suspects were arrested, mainly in the city’s poor slums, after the man thought to be their leader blew himself up in a cafe.
Morroco has been on alert since 2003 when 13 suicide bombers killed themselves and 32 other people in central Casablanca to punish the country for supporting Washington in its “war on terror”.
Officials say they belonged to a home-grown terrorist network with links to al Qaeda.