Two men have been arrested on suspicion of attempted sabotage against ships being built for the German navy in Hamburg. Prosecutors said the suspects were detained in the German port city and in Greece. They didn’t name the Romanian and Greek suspects, but said their apartments in Hamburg, Romania and Greece were searched. The two men, who worked at the port of Hamburg, are suspected of attempting to sabotage several corvettes destined for the German navy at a shipyard in the city last year. Prosecutors said they are accused of dumping more than 44 pounds of abrasive gravel into the engine block of one of the ships.