Belgrade/Frankfurt  - The German air carrier XL Airways confirmed that one of its aircraft had to make an emergency landing Saturday in Belgrade.

The Frankfurt-based firm said its Boeing 737-800 with 188 passengers and crew landed following a warning of an unspecified "engine problem" in the cockpit, spokesman Asger Schubert told Deutsche Presse-Agentur dpa.

Schubert denied Serbian media reports claiming that one of the plane's engines caught fire.

The aircraft was flying from Frankfurt to Antalya in Turkey. Passengers were to be transferred to Turkey with another engine during the day.

XL was founded two years ago. It charters planes to travel agencies, mostly for destinations in the Mediterranean basin. (dpa)