article_snippet: It is not known who fired the fatal shots.
article_snippet: Gunshots were heard and smoke could be seen rising from the scene at the end of the six-hour stand-off.
article_snippet: But We security forces launched the operation after gunshots were heard while terrorists were speaking on the phone during the negotiation,' Kiraz said.
article_snippet: Shots were then heard from inside the building, according to the Dogan news agency.
article_snippet: According to the Dogan news agency, gunshots were heard from inside the building after the militant group's deadline passed .