The IRW Tekel was a Romulan D'Deridex-class warbird in service in the late 24th century.
In 2377 the Tekel accompanied by a Griffin class vessel made an incursion into Klingon space in an attempt to obtain a sample of a newly discovered contagion being studied by the Klingons in a research base on Lak'Tral. Whilst the Griffin class took troops to Lak'Tral the Tekel engaged a K'vort class Bird-of-Prey guarding the base. The Bird-of-Prey was severely damaged and the Tekel was ready to finish it off when another Warbird under command of the Tal Shiar's Commander Vorsh entered the system and ordered the Tekel back into Romulan space. Unbeknownst to the reluctantly departed Tekel the second Warbird was in fact the USS Incursion utilising its holographic masking systems to rescue the Klingons. (ST video game: Away Team)