Preliminary data based on the notification from the Danish authorities :
The accident occurred at EKCH when SE-DST was in the process of parking and OY-KBC was towed from the hangar area to a stand.
SE-DST had landed and taxied to stand E77. When taxing for parking at stand E77, SE-DST stopped approximately 15 meters from the parking marks on stand E77 with the engines running.
When holding at this position, OY-KBC was towed on the taxiway behind SE-DST. When OY-KBC was towed past SE-DST, the right winglet on OY-KBC hit the tail section of SE-DST.
The towing of OY-KBC was stopped and SE-DST was guided to parking by a marshall.