Seven vessels catch fire in southern Iranian shipyard

Incident at port of Bushehr latest in series of fires and blasts that could be part of sabotage campaign

At least seven vessels have caught fire in a southern Iranian shipyard, in the latest in a series of explosions and fires that analysts speculate could be part of a state-sponsored sabotage campaign targeting the country's industrial, nuclear and military sites.

No casualties were reported at the port of Bushehr, the city that hosts Iran's only nuclear power plant, but images distributed by state media showed plumes of thick smoke billowing into the air and several fire trucks at the site.