Al Jazeera has learnt that Moroccan police were pursuing three men on suspicion of involvement in a suicide attack on an internet cafe om March 11.
A man carrying explosives was killed in that attack. An accomplice and three clients in the cafe were also injured.
Thirty-one people have been arrested since the March 11 attack.
Police said investigations into that blast had led them to suspected plots to attack the ports, police stations and tourist sites in Morocco.
An interior ministry official told The Associated Press news agency that the two men killed in the dawn raid were also being sought in connection with five suicide bombings in the city in 2003.