The striker was also suspended by the club last November.
The Ruhr valley club, firm title contenders only a few weeks ago with six wins from their first seven league matches, have lost their winning touch and are without a Bundesliga victory since September, piling pressure on coach Peter Bosz.
The African Player of the Year nominee for 2017 will miss his side's clash against Stuttgart in the weekend in a game that is really crucial for their form in order to keep themselves in contention for the Bundesliga title.
Borussia Dortmund Pierre-Emerick Aubameyang has been suspended by the German club over disciplinary reasons.
Couple accidentally shot at church while discussing gun safety
Someone reportedly asked if anyone brings a gun to their church, when one man said he takes his firearm wherever he goes. The bullet missed the woman's vital organs, and the couple was listed in stable condition at a hospital, he said.
It was then reported that Aubameyang had flown out to Barcelona to visit Ousmane Dembele during the global break, which was said to be against orders.
"I didn't turn up late for training", he is quoted as saying by Bild.
Dortmund host Tottenham in the Champions League on Tuesday followed by a league game against local rivals Schalke on Saturday.
Aubameyang will certainly be a miss for Peter Bosz's side as he is now their top scorer with 15 goals from 17 appearances across all competitions so far this season.