German leaders raised the possibility that a fiery cargo plane crash in Lithuania on Monday was the result of sabotage or hybrid warfare.

Lithuania has found no sign that the crash on Monday of a DHL cargo plane was caused by sabotage, and believes technical issues were a more likely explanation, officials said on Wednesday. The aircraft crashed as it came in to land at Vilnius airport on Monday,

The Lithuanian airport authority identified the aircraft as a “DHL cargo plane flying from Leipzig, Germany, to Vilnius Airport.”