Pirates have abducted 19 crew members from a Navios Maritime Acquisition VLCC 185 km off Nigeria.

In an alert marked with a "high" source confidence level, security consultancy Dryad Global said 18 Indians and a Turk were kidnapped from the 297,000-dwt Nave Constellation (built 2010) 48 km off the Egina terminal, south of Bonny Island, on 3 December.

"Indications are that seven crew are still onboard the tanker," it added.