Three people were taken into custody regarding the murder on the day of the killing.[1] However, movements tied to the ultra-nationalist movement are currently suspected of carrying out the murder, in particular after the arrest of Yasin Hayal, a militant who spent 11 months in prison for having taken part in the bombing of a McDonald's in Trabzon in 2004, and of Karadeniz Technical University student Erhan Tuncel, who was close to the Alperen organization, the neo-fascist youth organization associated with the ultra-nationalist and Islamist party Great Union Party (BBP), created by former members of the Nationalist Movement Party (MHP).[2] Yasin Hayal confessed to telling Samast to kill Dink and supplying the murder weapon, while Erhan Tuncel has been charged as a main instigator of the killing, and allegedly directed both Samast and Hayal.[25] The BBP has denied any involvement in the assassination.[4] Hrant Dink was described as a "traitor" by the Turkish far right, and had received up to 2,600 death threats from ultra-nationalist circles.[5] According to rumors reported by Turkish newspapers in late January 2007, Erhan Tuncel was actually a police informer for the Trabzon Police. The rumors also suggested that he warned Trabzon police office before the murder, but that the warnings were ignored.[26]