http://news.bbc.co.uk/2/hi/africa/7642978.stmUS surrounds hijacked tank ship
The US navy says it has deployed further vessels to surround a cargo ship loaded with 33 tanks and hijacked by pirates off Somalia last week.
A US navy spokesman said destroyers and cruisers surrounded the Ukrainian ship to stop the tanks and other weapons "falling into the wrong hands". He also cited reports that the cargo was meant for Sudan - and not Kenya, as claimed by the Kenyan government.
Pirates have said they want a ransom of $20m (£11m) to release the ship.
A spokesman for the US Navy's 5th Fleet, Lt Nathan Christensen, said the new vessels had been deployed within 10 miles (16kms) of the hijacked ship, the Faina. The Faina had already been surrounded by three warships, including the US destroyer USS Howard.
Another of the ships was from Russia but the nationality of the third was not clear.