Christian Nade and Ian Black were involved in a dressing-room bust-up after Hearts' defeat at Celtic on Wednesday, the club has confirmed.Nade is set to be fined after being identified as the aggressor in the dispute, with some reports claiming the striker punched his team-mate.
The Frenchman is expected to be dropped for Saturday's game with Falkirk.
"It is an internal matter and the player will be disciplined accordingly," said a club spokesman.
Nade played as a lone striker in the 2-0 loss at Celtic Park and was replaced by Gary Glen after 74 minutes.
The former Sheffield United forward has struggled for form this term, netting just twice for the Edinburgh side.
Source: BBC Sport