Police are continuing an intensive manhunt for a man suspected of carrying out sabotage attacks on Germany's electricity grid.
The manhunt follows two letters of claim sent to several media outlets, including dpa. "The knowledge revealed in these letters is clearly the knowledge of the perpetrator," said Interior Minister Alexander Dobrindt.
On the likely motive, Dobrindt said it was highly probable that the attacks amounted to "climate terrorism" by a lone actor. One of the letters states: "Generating electricity from fossil fuels is a crime."
The incidents were concentrated in the states of North Rhine-Westphalia, Brandenburg and most recently Saxony - three states where lignite is still mined and used to generate power.
Police and prosecutors in Brandenburg and North Rhine-Westphalia issued a joint wanted notice on Saturday afternoon, releasing two photographs of the 48-year-old suspect and appealing to the public for information.
On Friday, officers found explosives at the suspect's flat in Gevelsberg in North Rhine-Westphalia. Later that afternoon, a special operations unit raided a lorry in a forest near Niederzier, roughly 100 kilometres away, which appeared to have been converted into a motorhome. The suspect was not found.
There have been several attempts at sabotage relating to the electricity supply this week. Police are investigating on suspicion of, among other things, forming a terrorist organization.
