In 2001, Bartetzko orchestrated a car bombing outside a Yugoslav government office in Pristina, killing one Serb civilian, and injuring four others.

In 1992, he travelled to the Republic of Bosnia and Herzegovina to fight in the Bosnian War, where he joined the Croatian Defence Council (HVO).

[4] He subsequently volunteered to fight with the Croatian Army and participated in Operation Mistral 2 in the closing stages of the Bosnian War.

During his time with the KLA, he assumed the nom de guerre Sha'ban, the eighth month of the Islamic calendar.

[2] On 18 April 2001, a car bomb exploded near the Centre for Peace and Tolerance in Pristina, the headquarters of the Yugoslav passport office in Kosovo, killing one civilian and wounding four others, including a woman who was left with serious injuries.

[6] According to the United Nations Interim Administration Mission in Kosovo (UNMIK) spokesperson Andrea Angeli, it contained around 10 kilograms (22 lb) of explosive.

[6] The trial was held under heavy security, with United Nations police officers wearing ballistic vests and armed with automatic rifles.

Upon his release, he relocated to Pristina and found work providing legal services to a local media company, having studied law while imprisoned.

[3] In 2022, Bartetzko went to Ukraine to provide logistical support for the Ukrainian war effort amidst the Russian invasion of the country.