Romania coach Anghel Iordanescu was upset by a reporter's question when asked about a player who was said to have been smoking a cigarette during the loss to France.
Iordanescu called the reported a "liar" and said he was "misinforming people."
A Romanian newspaper reported that substitute Denis Alibec could not be found to warm up early in the second half because he was smoking in the locker room. Alibec eventually came on in the 61st minute.
Iordanescu, speaking through a translator at Parc des Princes, said: "I don't defend Alibec. I think it is difficult to say what he really did. I was on the pitch."
Romania, who lost to France 2-1 on Friday, play their second match at Euro 2016 against Switzerland on Wednesday.