LONDON, Jan 12 (Reuters) - The Combined Maritime Forces (CMF) has warned all ships to "stay well away from Bab al-Mandab", tanker body Intertanko said in a note circulated to its members.

"The threat period for shipping is expected to last for several days," the Intertanko note, seen by Reuters, said. (Reporting by Robert Harvey; Editing by Toby Chopra)