London ( CNN ) -- A shooting on board the HMS Astute , a British nuclear submarine making a visit to Southampton , left one person dead and another critically wounded , authorities said Friday . One man was arrested after the shooting , said police , who were contacted by the Ministry of Defense about the incident . `` I am greatly saddened to hear of this tragic incident and of the death of a Royal Navy serviceman , '' Defense Secretary Liam Fox said in a statement Friday . `` It is right and proper that a full police investigation is carried out and allowed to take its course . `` My thoughts and sympathies are with those who have been affected and their families . '' No other details of the incident were immediately released . The Astute made headlines last year when it ran aground off the Isle of Skye , in northern Scotland , while doing sea trials . Its nuclear propulsion system was not damaged in the incident , and its reactor was declared safe , with no environmental impact . It was eventually pulled free and escorted back to port . The submarine can carry a mix of as many as 38 Spearfish heavyweight torpedoes and Tomahawk land-attack cruise missiles , according to the ministry .
NEW : `` Full police investigation '' will be carried out , defense secretary says . One man arrested in the shooting . The U.S. State Department said it was aware of reports that a gunman had opened fire at an American diplomatic compound in Benghazi, Libya.