FRANKFURT (Reuters) - German container shipper Hapag-Lloyd on Monday said it continued to avoid the Red Sea and Gulf of Aden, adding that the "risk zone" related to possible attacks by Iran-aligned Houthi militants had not spread to the Mediterranean Sea.

"What we are seeing is that the attacks in the Red Sea and the Gulf of Aden are moving further and further out to sea. That is why we are avoiding this area altogether," the company said in e-mailed comments.

Earlier, bigger rival Maersk said the disruption to container shipping traffic in the Red Sea was increasing and expected to reduce the industry's capacity between the Far East and Europe by up to 20% in the second quarter.

(Reporting by Christoph Steitz, Editing by Rachel More)