The competition authority has accused Deutsche Post of violating anti-trust law by offering large clients in the telecoms sector hidden discounts, allowing it to trump rivals, the paper said, without citing its sources.

A Deutsche Post spokesman said the firm had not yet received anything in writing from the competition authority.

A spokesman from the competition authority said the case against Deutsche Post would be concluded shortly.

(Reporting by Matthias Inverardi Writing by Emma Thomasson; Editing by David Evans and Mark Potter)