On 31 March 2015 suspected members of DHKP-C took prosecutor Mehmet Selim Kiraz hostage on the sixth floor of the Istanbul Çağlayan Justice Palace. They demanded that the police announce the names of four members of the security services who they said were connected to the death of Berkin Elvan. The police negotiated with the gunmen for six hours, but eventually stormed the courthouse "because of gunshots heard from inside the prosecutor's office".