Bombers killed at least 38 people in Morocco in the second major attack in a week, hours after President Bush warned of "killers on the loose." The overnight blasts in Casablanca followed Monday's Saudi bombings that killed at least 34 people in expatriate compounds and warnings that Osama bin Laden's al Qaeda may strike again. Britain, which earlier banned airliner flights to and from Kenya, warned its citizens of a "clear terrorist threat" in six other East African countries. Friday night's blasts in Morocco's commercial capital, some of them car bombs, hit Jewish and Spanish targets and damaged the Belgian consulate, Morocco's official MAP news agency said. "There are body parts all over the place," a Moroccan journalist told the BBC of the Spanish cultural center scene. Moroccan Interior Minister Al Mustapha Sahel said 24 people -- mostly Moroccans -- were killed and 60 wounded in five blasts. Earlier, Bush said the attacks in Saudi Arabia, which killed eight Americans, should make the world sit up and take notice. "There are killers on the loose," he told reporters as terror alerts spread across the world. "It is certainly a wake-up call to many that the war on terror continues, that we've still got a big task to protect the American people and others who love freedom from the designs and the will of these purveyors of hate," he said. **PHOTO CAPTION*** Emergency service workers respond to a suicide attack at the "Casa de Espana" at the Hispanic cultural centre in Casablanca. A wave of suicide bombings left at least 24 people dead and scores injured(AFP/Abdelhak Senna)