Pirates boarded an offshore tugboat and kidnapped four crew members off the Nigerian coast, dpa cited the International Maritime Bureau as reporting Monday. The attack took place on Sunday off the coast of Bayelsa. The bureau said that pirates, armed with guns, attacked and boarded the offshore supply vessel. The sailors were not injured and the boat reached a safe port. There was no further information immediately available. Last week, five crew members of a tanker were kidnapped off the oil-rich Niger delta, the vessels' operating company said.
