working due to the lack of electricity. Until recently, the Metro had been underfunded and operated in severe difficulties due to poor electrical supply. It had also become infamous for widespread petty crime, like pickpocketing and mugging. In addition, there have been several incidents at metro stations in recent years. On 9 October 1997, a former policeman blew himself up at Didube station. On 14 February 2000, a teenager threw a homemade hand grenade into a metro station, injuring several people. In March 2004, several people were poisoned by an unidentified gas while using the Metro. However, crime has reduced as a result of security and administration reforms in the system from 2004 to 2005. Other services have also significantly improved. Modernization Efforts The Tbilisi Metro system is undergoing a major rehabilitation effort, including the reconstruction of the stations as well as the modernization of trains and other facilities. The city's 2006 budget allocated 16 million lari for this project. Former President of Georgia Mikheil Saakashvili promised to make the Metro a most prestigious public transport system, and charged the Director General of Tbilisi Metro, Zurab Kikalishvili, in late 2005, to bring the metro up to European standards by 2007. In 2005 began the renovation process of subway trains. As part of the modernization, the soviet-era rolling stock was overhauled, old parts were replaced with new ones, the interior of the car was changed and the exterior was given a different look. Additionally, the driver cab was equipped with a modern control panel. In subsequent years, however, the upgrade process slowed significantly, and as of July 2010, the Tbilisi metro rail was still far from its target standard. Some renovated metro stations had to be repaired again soon due to deficient planning and poor quality of the renovation. The renovation process of the system continues unfortunately slowly and there are several stations under renovation. Tbilisi City Hall purchased 10 4-car trains for Tbilisi Metro from Metrowagonmash, which will meet European standards. The extension of the Saburtalo Line to State University station began in 1985. In 1993 the construction was stopped and it went into conservation mode. In January 2012 construction was scheduled to start on a frozen extension of the Saburtalo Line from the Vazha-Pshavela station to the Sakhelmtsipo Universiteti (State University) station, of which 80% of the work was completed during the Soviet era. But it was only restarted