Preliminary expert report regarding demolished buildings completed, say prosecutors Meriç Ürer | 28.04.2021 IZMIR, Turkey Turkish prosecutors issued arrest warrants for 22 suspects over the destruction of buildings caused due to negligence in last year's earthquake in Turkey's western province of Izmir. The warrants were issued after a preliminary report was released on the earthquake compiled by experts from the Dokuz Eylul University (DEU), the Istanbul Technical University and TUBITAK-Marmara Research Center. The samples taken from the wreckage were analyzed by three experts from the DEU and it was concluded that the reason for the collapse of buildings was the use of substandard materials and design errors.