Prosecutors in Germany have been trying to figure out who carried out an attack on the Nord Stream gas pipelines two years ago. Media reports say they have now issued an arrest warrant for a Ukrainian national.

The pipelines were built to carry natural gas from Russia to Europe. The attack in September 2022 was thought to be an attempt to cut off a source of revenue for the Kremlin, leading many to speculate that Ukrainian forces were responsible.

The reported suspect has worked as a diving instructor. He is believed to have lived in neighboring Poland but has left the country.

German authorities have reportedly identified two other suspects. They say the pair may have been responsible for attaching the explosives to the pipelines. It remains unclear to what extent officials in Ukraine may have been involved in the planning or execution of the attack.