Borussia Dortmund forward Pierre-Emerick Aubameyang was absent from Gabon's World Cup qualifier against Mozambique on Wednesday due to a muscular injury.
A statement from the Gabonese Football Federation confirmed the 26-year-old would be sidelined and that further details over the nature of the injury would be disclosed in due course.
The statement read: "Suffering from elongation, Pierre Emerick Aubameyang is out for tonight's game against Mozambique. More information [will be released] in the coming hours."
Aubameyang has been in scintillating form for Dortmund, with his decisive goal in Sunday's 3-2 derby victory over Schalke his 22nd in just 20 appearances this season.
Gabon fell to a 1-0 away defeat without the injured striker, meaning Mozambique hold the advantage going into Saturday's second leg.