article_snippet.sent: Gunshots were heard and smoke could be seen rising from the scene at the end of the six-hour stand-off.
article_snippet.sent: Police chief Selami Altınok said officers stormed the building on Tuesday after hearing gunshots, and killed two of the gunmen. '
article_snippet.sent: But We security forces launched the operation after gunshots were heard while terrorists were speaking on the phone during the negotiation,' Police chief Selami Altınok said.
article_snippet.sent: Shots were then heard from inside the building, according to the Dogan news agency.
article_snippet.sent: According to the Dogan news agency, gunshots were heard from inside the building after the banned leftist group DHKP-C group who took Turkish Mehmet Selim Kiraz hostage's deadline passed .