Unknown persons set up several construction machines in flames, it happened on a construction site in Pankow.
Inhabitants saw the flames on the spot, sited in the Richard-Ermisch-straße and called the cops.
A digger and two radlader got burned. State securtiy investigates, since a political motivation is believed, there is no trace of the authors.
infos about the construction site: http://www.concepta-stadthaeuser.de/en/news/building-projects.html
Note for english speaking persons: several luxurious houses are being build on this spot, close to an area where several houseprojects are located.