[MENL] -- Morocco has raised its security alert amid the threat of an Al Qaida strike. Moroccan security sources said authorities have raised the threat alert to Code Yellow in wake of an intelligence report that Al Qaida-aligned insurgents have infiltrated the North African kingdom. They said the insurgents intend to conduct a series of attacks in Morocco. "We believe that the terrorists have come from Algeria," a security source said.The sources said Code Yellow, one below the highest level of alert, required authorities to increase security at all installations regarded as critical and sensitive. They said this included Western embassies and diplomatic residences.